diff --git a/composer.json b/composer.json
index 667face..1374814 100644
--- a/composer.json
+++ b/composer.json
@@ -9,8 +9,9 @@
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-    "symfony/process": "^4.0|^5.0",
-    "spatie/temporary-directory": "^1.2"
+    "php": "^8.0",
+    "symfony/process": "^5.0|^6.0",
+    "spatie/temporary-directory": "^2.0"
   },
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@@ -24,7 +25,7 @@
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   "require-dev": {
     "phpunit/phpunit": "^8.5",
-    "league/csv": "^9.4"
+    "league/csv": "^9.8"
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 }
diff --git a/composer.lock b/composer.lock
index 291dac2..f93765d 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,27 +4,27 @@
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+    "content-hash": "4998edbf07ab3c0e04f16a69d028e611",
     "packages": [
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             "name": "spatie/temporary-directory",
-            "version": "1.2.1",
+            "version": "2.1.1",
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                 "url": "https://github.com/spatie/temporary-directory.git",
-                "reference": "3e51af9a8361f85cffc1fb2c52135f3e064758cc"
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-                "reference": "3e51af9a8361f85cffc1fb2c52135f3e064758cc",
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@@ -47,34 +47,44 @@
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             "homepage": "https://github.com/spatie/temporary-directory",
             "keywords": [
+                "php",
                 "spatie",
                 "temporary-directory"
             ],
-            "time": "2019-08-28T06:53:51+00:00"
+            "support": {
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+                "source": "https://github.com/spatie/temporary-directory/tree/2.1.1"
+            },
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+                    "type": "custom"
+                },
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+                    "url": "https://github.com/spatie",
+                    "type": "github"
+                }
+            ],
+            "time": "2022-08-23T07:15:15+00:00"
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-            "version": "v5.0.1",
+            "version": "v6.1.3",
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                 "url": "https://github.com/symfony/process.git",
-                "reference": "1568a2e8370fbc7416ef64eb5a698e4a05db5ff4"
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+                "url": "https://api.github.com/repos/symfony/process/zipball/a6506e99cfad7059b1ab5cab395854a0a0c21292",
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@@ -97,44 +107,57 @@
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-            "description": "Symfony Process Component",
+            "description": "Executes commands in sub-processes",
             "homepage": "https://symfony.com",
-            "time": "2019-11-28T14:20:16+00:00"
+            "support": {
+                "source": "https://github.com/symfony/process/tree/v6.1.3"
+            },
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+                    "type": "custom"
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+                {
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+                    "type": "github"
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+                {
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+                    "type": "tidelift"
+                }
+            ],
+            "time": "2022-06-27T17:24:16+00:00"
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     ],
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-            "version": "1.3.0",
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+                "phpbench/phpbench": "^0.16 || ^1",
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@@ -148,7 +171,7 @@
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                     "email": "ocramius@gmail.com",
-                    "homepage": "http://ocramius.github.com/"
+                    "homepage": "https://ocramius.github.io/"
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@@ -157,37 +180,56 @@
                 "constructor",
                 "instantiate"
             ],
-            "time": "2019-10-21T16:45:58+00:00"
+            "support": {
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+                "source": "https://github.com/doctrine/instantiator/tree/1.4.1"
+            },
+            "funding": [
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+                    "url": "https://www.doctrine-project.org/sponsorship.html",
+                    "type": "custom"
+                },
+                {
+                    "url": "https://www.patreon.com/phpdoctrine",
+                    "type": "patreon"
+                },
+                {
+                    "url": "https://tidelift.com/funding/github/packagist/doctrine%2Finstantiator",
+                    "type": "tidelift"
+                }
+            ],
+            "time": "2022-03-03T08:28:38+00:00"
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-            "version": "9.4.1",
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-                "reference": "bf83acc23a7d60978fce36a384f97bf9d7d2ea0c"
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-                "phpstan/phpstan-strict-rules": "^0.9.0",
-                "phpunit/phpunit": "^6.0"
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+                "phpstan/phpstan-strict-rules": "^1.1.0",
+                "phpunit/phpunit": "^9.5.11"
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             "suggest": {
+                "ext-dom": "Required to use the XMLConverter and or the HTMLConverter classes",
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@@ -197,12 +239,12 @@
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-                    "League\\Csv\\": "src"
-                },
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-            "description": "Csv data manipulation made easy in PHP",
-            "homepage": "http://csv.thephpleague.com",
+            "description": "CSV data manipulation made easy in PHP",
+            "homepage": "https://csv.thephpleague.com",
             "keywords": [
+                "convert",
                 "csv",
                 "export",
                 "filter",
                 "import",
                 "read",
+                "transform",
                 "write"
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-            "time": "2019-10-17T06:05:32+00:00"
+            "support": {
+                "docs": "https://csv.thephpleague.com",
+                "issues": "https://github.com/thephpleague/csv/issues",
+                "rss": "https://github.com/thephpleague/csv/releases.atom",
+                "source": "https://github.com/thephpleague/csv"
+            },
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+                    "url": "https://github.com/sponsors/nyamsprod",
+                    "type": "github"
+                }
+            ],
+            "time": "2022-01-04T00:13:07+00:00"
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-            "version": "1.9.3",
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+                "php": "^7.1 || ^8.0"
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+            "conflict": {
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-                },
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@@ -274,32 +331,43 @@
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-            "time": "2019-08-09T12:45:53+00:00"
+            "support": {
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+                "source": "https://github.com/myclabs/DeepCopy/tree/1.11.0"
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@@ -329,24 +397,28 @@
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             "description": "Component for reading phar.io manifest information from a PHP Archive (PHAR)",
-            "time": "2018-07-08T19:23:20+00:00"
+            "support": {
+                "issues": "https://github.com/phar-io/manifest/issues",
+                "source": "https://github.com/phar-io/manifest/tree/2.0.3"
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@@ -376,242 +448,33 @@
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                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/environment/zipball/464c90d7bdf5ad4e8a6aea15c091fec0603d4368",
-                "reference": "464c90d7bdf5ad4e8a6aea15c091fec0603d4368",
+                "url": "https://api.github.com/repos/sebastianbergmann/environment/zipball/d47bbbad83711771f167c72d4e3f25f7fcc1f8b0",
+                "reference": "d47bbbad83711771f167c72d4e3f25f7fcc1f8b0",
                 "shasum": ""
             },
             "require": {
-                "php": "^7.1"
+                "php": ">=7.1"
             },
             "require-dev": {
                 "phpunit/phpunit": "^7.5"
@@ -1142,29 +1094,39 @@
                 "environment",
                 "hhvm"
             ],
-            "time": "2019-11-20T08:46:58+00:00"
+            "support": {
+                "issues": "https://github.com/sebastianbergmann/environment/issues",
+                "source": "https://github.com/sebastianbergmann/environment/tree/4.2.4"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/sebastianbergmann",
+                    "type": "github"
+                }
+            ],
+            "time": "2020-11-30T07:53:42+00:00"
         },
         {
             "name": "sebastian/exporter",
-            "version": "3.1.2",
+            "version": "3.1.5",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/exporter.git",
-                "reference": "68609e1261d215ea5b21b7987539cbfbe156ec3e"
+                "reference": "73a9676f2833b9a7c36968f9d882589cd75511e6"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/exporter/zipball/68609e1261d215ea5b21b7987539cbfbe156ec3e",
-                "reference": "68609e1261d215ea5b21b7987539cbfbe156ec3e",
+                "url": "https://api.github.com/repos/sebastianbergmann/exporter/zipball/73a9676f2833b9a7c36968f9d882589cd75511e6",
+                "reference": "73a9676f2833b9a7c36968f9d882589cd75511e6",
                 "shasum": ""
             },
             "require": {
-                "php": "^7.0",
+                "php": ">=7.0",
                 "sebastian/recursion-context": "^3.0"
             },
             "require-dev": {
                 "ext-mbstring": "*",
-                "phpunit/phpunit": "^6.0"
+                "phpunit/phpunit": "^8.5"
             },
             "type": "library",
             "extra": {
@@ -1209,24 +1171,34 @@
                 "export",
                 "exporter"
             ],
-            "time": "2019-09-14T09:02:43+00:00"
+            "support": {
+                "issues": "https://github.com/sebastianbergmann/exporter/issues",
+                "source": "https://github.com/sebastianbergmann/exporter/tree/3.1.5"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/sebastianbergmann",
+                    "type": "github"
+                }
+            ],
+            "time": "2022-09-14T06:00:17+00:00"
         },
         {
             "name": "sebastian/global-state",
-            "version": "3.0.0",
+            "version": "3.0.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/global-state.git",
-                "reference": "edf8a461cf1d4005f19fb0b6b8b95a9f7fa0adc4"
+                "reference": "de036ec91d55d2a9e0db2ba975b512cdb1c23921"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/global-state/zipball/edf8a461cf1d4005f19fb0b6b8b95a9f7fa0adc4",
-                "reference": "edf8a461cf1d4005f19fb0b6b8b95a9f7fa0adc4",
+                "url": "https://api.github.com/repos/sebastianbergmann/global-state/zipball/de036ec91d55d2a9e0db2ba975b512cdb1c23921",
+                "reference": "de036ec91d55d2a9e0db2ba975b512cdb1c23921",
                 "shasum": ""
             },
             "require": {
-                "php": "^7.2",
+                "php": ">=7.2",
                 "sebastian/object-reflector": "^1.1.1",
                 "sebastian/recursion-context": "^3.0"
             },
@@ -1263,24 +1235,34 @@
             "keywords": [
                 "global state"
             ],
-            "time": "2019-02-01T05:30:01+00:00"
+            "support": {
+                "issues": "https://github.com/sebastianbergmann/global-state/issues",
+                "source": "https://github.com/sebastianbergmann/global-state/tree/3.0.2"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/sebastianbergmann",
+                    "type": "github"
+                }
+            ],
+            "time": "2022-02-10T06:55:38+00:00"
         },
         {
             "name": "sebastian/object-enumerator",
-            "version": "3.0.3",
+            "version": "3.0.4",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/object-enumerator.git",
-                "reference": "7cfd9e65d11ffb5af41198476395774d4c8a84c5"
+                "reference": "e67f6d32ebd0c749cf9d1dbd9f226c727043cdf2"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/object-enumerator/zipball/7cfd9e65d11ffb5af41198476395774d4c8a84c5",
-                "reference": "7cfd9e65d11ffb5af41198476395774d4c8a84c5",
+                "url": "https://api.github.com/repos/sebastianbergmann/object-enumerator/zipball/e67f6d32ebd0c749cf9d1dbd9f226c727043cdf2",
+                "reference": "e67f6d32ebd0c749cf9d1dbd9f226c727043cdf2",
                 "shasum": ""
             },
             "require": {
-                "php": "^7.0",
+                "php": ">=7.0",
                 "sebastian/object-reflector": "^1.1.1",
                 "sebastian/recursion-context": "^3.0"
             },
@@ -1310,24 +1292,34 @@
             ],
             "description": "Traverses array structures and object graphs to enumerate all referenced objects",
             "homepage": "https://github.com/sebastianbergmann/object-enumerator/",
-            "time": "2017-08-03T12:35:26+00:00"
+            "support": {
+                "issues": "https://github.com/sebastianbergmann/object-enumerator/issues",
+                "source": "https://github.com/sebastianbergmann/object-enumerator/tree/3.0.4"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/sebastianbergmann",
+                    "type": "github"
+                }
+            ],
+            "time": "2020-11-30T07:40:27+00:00"
         },
         {
             "name": "sebastian/object-reflector",
-            "version": "1.1.1",
+            "version": "1.1.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/object-reflector.git",
-                "reference": "773f97c67f28de00d397be301821b06708fca0be"
+                "reference": "9b8772b9cbd456ab45d4a598d2dd1a1bced6363d"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/object-reflector/zipball/773f97c67f28de00d397be301821b06708fca0be",
-                "reference": "773f97c67f28de00d397be301821b06708fca0be",
+                "url": "https://api.github.com/repos/sebastianbergmann/object-reflector/zipball/9b8772b9cbd456ab45d4a598d2dd1a1bced6363d",
+                "reference": "9b8772b9cbd456ab45d4a598d2dd1a1bced6363d",
                 "shasum": ""
             },
             "require": {
-                "php": "^7.0"
+                "php": ">=7.0"
             },
             "require-dev": {
                 "phpunit/phpunit": "^6.0"
@@ -1355,24 +1347,34 @@
             ],
             "description": "Allows reflection of object attributes, including inherited and non-public ones",
             "homepage": "https://github.com/sebastianbergmann/object-reflector/",
-            "time": "2017-03-29T09:07:27+00:00"
+            "support": {
+                "issues": "https://github.com/sebastianbergmann/object-reflector/issues",
+                "source": "https://github.com/sebastianbergmann/object-reflector/tree/1.1.2"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/sebastianbergmann",
+                    "type": "github"
+                }
+            ],
+            "time": "2020-11-30T07:37:18+00:00"
         },
         {
             "name": "sebastian/recursion-context",
-            "version": "3.0.0",
+            "version": "3.0.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/recursion-context.git",
-                "reference": "5b0cd723502bac3b006cbf3dbf7a1e3fcefe4fa8"
+                "reference": "367dcba38d6e1977be014dc4b22f47a484dac7fb"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/recursion-context/zipball/5b0cd723502bac3b006cbf3dbf7a1e3fcefe4fa8",
-                "reference": "5b0cd723502bac3b006cbf3dbf7a1e3fcefe4fa8",
+                "url": "https://api.github.com/repos/sebastianbergmann/recursion-context/zipball/367dcba38d6e1977be014dc4b22f47a484dac7fb",
+                "reference": "367dcba38d6e1977be014dc4b22f47a484dac7fb",
                 "shasum": ""
             },
             "require": {
-                "php": "^7.0"
+                "php": ">=7.0"
             },
             "require-dev": {
                 "phpunit/phpunit": "^6.0"
@@ -1393,14 +1395,14 @@
                 "BSD-3-Clause"
             ],
             "authors": [
-                {
-                    "name": "Jeff Welch",
-                    "email": "whatthejeff@gmail.com"
-                },
                 {
                     "name": "Sebastian Bergmann",
                     "email": "sebastian@phpunit.de"
                 },
+                {
+                    "name": "Jeff Welch",
+                    "email": "whatthejeff@gmail.com"
+                },
                 {
                     "name": "Adam Harvey",
                     "email": "aharvey@php.net"
@@ -1408,24 +1410,34 @@
             ],
             "description": "Provides functionality to recursively process PHP variables",
             "homepage": "http://www.github.com/sebastianbergmann/recursion-context",
-            "time": "2017-03-03T06:23:57+00:00"
+            "support": {
+                "issues": "https://github.com/sebastianbergmann/recursion-context/issues",
+                "source": "https://github.com/sebastianbergmann/recursion-context/tree/3.0.1"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/sebastianbergmann",
+                    "type": "github"
+                }
+            ],
+            "time": "2020-11-30T07:34:24+00:00"
         },
         {
             "name": "sebastian/resource-operations",
-            "version": "2.0.1",
+            "version": "2.0.2",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/resource-operations.git",
-                "reference": "4d7a795d35b889bf80a0cc04e08d77cedfa917a9"
+                "reference": "31d35ca87926450c44eae7e2611d45a7a65ea8b3"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/resource-operations/zipball/4d7a795d35b889bf80a0cc04e08d77cedfa917a9",
-                "reference": "4d7a795d35b889bf80a0cc04e08d77cedfa917a9",
+                "url": "https://api.github.com/repos/sebastianbergmann/resource-operations/zipball/31d35ca87926450c44eae7e2611d45a7a65ea8b3",
+                "reference": "31d35ca87926450c44eae7e2611d45a7a65ea8b3",
                 "shasum": ""
             },
             "require": {
-                "php": "^7.1"
+                "php": ">=7.1"
             },
             "type": "library",
             "extra": {
@@ -1450,24 +1462,34 @@
             ],
             "description": "Provides a list of PHP built-in functions that operate on resources",
             "homepage": "https://www.github.com/sebastianbergmann/resource-operations",
-            "time": "2018-10-04T04:07:39+00:00"
+            "support": {
+                "issues": "https://github.com/sebastianbergmann/resource-operations/issues",
+                "source": "https://github.com/sebastianbergmann/resource-operations/tree/2.0.2"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/sebastianbergmann",
+                    "type": "github"
+                }
+            ],
+            "time": "2020-11-30T07:30:19+00:00"
         },
         {
             "name": "sebastian/type",
-            "version": "1.1.3",
+            "version": "1.1.4",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/type.git",
-                "reference": "3aaaa15fa71d27650d62a948be022fe3b48541a3"
+                "reference": "0150cfbc4495ed2df3872fb31b26781e4e077eb4"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/type/zipball/3aaaa15fa71d27650d62a948be022fe3b48541a3",
-                "reference": "3aaaa15fa71d27650d62a948be022fe3b48541a3",
+                "url": "https://api.github.com/repos/sebastianbergmann/type/zipball/0150cfbc4495ed2df3872fb31b26781e4e077eb4",
+                "reference": "0150cfbc4495ed2df3872fb31b26781e4e077eb4",
                 "shasum": ""
             },
             "require": {
-                "php": "^7.2"
+                "php": ">=7.2"
             },
             "require-dev": {
                 "phpunit/phpunit": "^8.2"
@@ -1496,7 +1518,17 @@
             ],
             "description": "Collection of value objects that represent the types of the PHP type system",
             "homepage": "https://github.com/sebastianbergmann/type",
-            "time": "2019-07-02T08:10:15+00:00"
+            "support": {
+                "issues": "https://github.com/sebastianbergmann/type/issues",
+                "source": "https://github.com/sebastianbergmann/type/tree/1.1.4"
+            },
+            "funding": [
+                {
+                    "url": "https://github.com/sebastianbergmann",
+                    "type": "github"
+                }
+            ],
+            "time": "2020-11-30T07:25:11+00:00"
         },
         {
             "name": "sebastian/version",
@@ -1539,85 +1571,31 @@
             ],
             "description": "Library that helps with managing the version number of Git-hosted PHP projects",
             "homepage": "https://github.com/sebastianbergmann/version",
-            "time": "2016-10-03T07:35:21+00:00"
-        },
-        {
-            "name": "symfony/polyfill-ctype",
-            "version": "v1.13.1",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/symfony/polyfill-ctype.git",
-                "reference": "f8f0b461be3385e56d6de3dbb5a0df24c0c275e3"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/symfony/polyfill-ctype/zipball/f8f0b461be3385e56d6de3dbb5a0df24c0c275e3",
-                "reference": "f8f0b461be3385e56d6de3dbb5a0df24c0c275e3",
-                "shasum": ""
-            },
-            "require": {
-                "php": ">=5.3.3"
-            },
-            "suggest": {
-                "ext-ctype": "For best performance"
-            },
-            "type": "library",
-            "extra": {
-                "branch-alias": {
-                    "dev-master": "1.13-dev"
-                }
-            },
-            "autoload": {
-                "psr-4": {
-                    "Symfony\\Polyfill\\Ctype\\": ""
-                },
-                "files": [
-                    "bootstrap.php"
-                ]
+            "support": {
+                "issues": "https://github.com/sebastianbergmann/version/issues",
+                "source": "https://github.com/sebastianbergmann/version/tree/master"
             },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "MIT"
-            ],
-            "authors": [
-                {
-                    "name": "Gert de Pagter",
-                    "email": "BackEndTea@gmail.com"
-                },
-                {
-                    "name": "Symfony Community",
-                    "homepage": "https://symfony.com/contributors"
-                }
-            ],
-            "description": "Symfony polyfill for ctype functions",
-            "homepage": "https://symfony.com",
-            "keywords": [
-                "compatibility",
-                "ctype",
-                "polyfill",
-                "portable"
-            ],
-            "time": "2019-11-27T13:56:44+00:00"
+            "time": "2016-10-03T07:35:21+00:00"
         },
         {
             "name": "theseer/tokenizer",
-            "version": "1.1.3",
+            "version": "1.2.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/theseer/tokenizer.git",
-                "reference": "11336f6f84e16a720dae9d8e6ed5019efa85a0f9"
+                "reference": "34a41e998c2183e22995f158c581e7b5e755ab9e"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/theseer/tokenizer/zipball/11336f6f84e16a720dae9d8e6ed5019efa85a0f9",
-                "reference": "11336f6f84e16a720dae9d8e6ed5019efa85a0f9",
+                "url": "https://api.github.com/repos/theseer/tokenizer/zipball/34a41e998c2183e22995f158c581e7b5e755ab9e",
+                "reference": "34a41e998c2183e22995f158c581e7b5e755ab9e",
                 "shasum": ""
             },
             "require": {
                 "ext-dom": "*",
                 "ext-tokenizer": "*",
                 "ext-xmlwriter": "*",
-                "php": "^7.0"
+                "php": "^7.2 || ^8.0"
             },
             "type": "library",
             "autoload": {
@@ -1637,55 +1615,17 @@
                 }
             ],
             "description": "A small library for converting tokenized PHP source code into XML and potentially other formats",
-            "time": "2019-06-13T22:48:21+00:00"
-        },
-        {
-            "name": "webmozart/assert",
-            "version": "1.6.0",
-            "source": {
-                "type": "git",
-                "url": "https://github.com/webmozart/assert.git",
-                "reference": "573381c0a64f155a0d9a23f4b0c797194805b925"
-            },
-            "dist": {
-                "type": "zip",
-                "url": "https://api.github.com/repos/webmozart/assert/zipball/573381c0a64f155a0d9a23f4b0c797194805b925",
-                "reference": "573381c0a64f155a0d9a23f4b0c797194805b925",
-                "shasum": ""
-            },
-            "require": {
-                "php": "^5.3.3 || ^7.0",
-                "symfony/polyfill-ctype": "^1.8"
-            },
-            "conflict": {
-                "vimeo/psalm": "<3.6.0"
-            },
-            "require-dev": {
-                "phpunit/phpunit": "^4.8.36 || ^7.5.13"
+            "support": {
+                "issues": "https://github.com/theseer/tokenizer/issues",
+                "source": "https://github.com/theseer/tokenizer/tree/1.2.1"
             },
-            "type": "library",
-            "autoload": {
-                "psr-4": {
-                    "Webmozart\\Assert\\": "src/"
-                }
-            },
-            "notification-url": "https://packagist.org/downloads/",
-            "license": [
-                "MIT"
-            ],
-            "authors": [
+            "funding": [
                 {
-                    "name": "Bernhard Schussek",
-                    "email": "bschussek@gmail.com"
+                    "url": "https://github.com/theseer",
+                    "type": "github"
                 }
             ],
-            "description": "Assertions to validate method input/output with nice error messages.",
-            "keywords": [
-                "assert",
-                "check",
-                "validate"
-            ],
-            "time": "2019-11-24T13:36:37+00:00"
+            "time": "2021-07-28T10:34:58+00:00"
         }
     ],
     "aliases": [],
@@ -1693,6 +1633,9 @@
     "stability-flags": [],
     "prefer-stable": false,
     "prefer-lowest": false,
-    "platform": [],
-    "platform-dev": []
+    "platform": {
+        "php": "^8.0"
+    },
+    "platform-dev": [],
+    "plugin-api-version": "2.3.0"
 }
diff --git a/src/Area.php b/src/Area.php
index b1f5eb1..0cd006e 100644
--- a/src/Area.php
+++ b/src/Area.php
@@ -6,12 +6,12 @@
 
 class Area
 {
-    protected $xTopLeft;
-    protected $yTopLeft;
-    protected $xBottomRight;
-    protected $yBottomRight;
+    protected int $xTopLeft;
+    protected int $yTopLeft;
+    protected int $xBottomRight;
+    protected int $yBottomRight;
 
-    public function __construct($xTopLeft, $yTopLeft, $xBottomRight, $yBottomRight)
+    public function __construct(int $xTopLeft, int $yTopLeft, int $xBottomRight, int $yBottomRight)
     {
         $this->xTopLeft = $xTopLeft;
         $this->yTopLeft = $yTopLeft;
@@ -19,27 +19,27 @@ public function __construct($xTopLeft, $yTopLeft, $xBottomRight, $yBottomRight)
         $this->yBottomRight = $yBottomRight;
     }
 
-    public function xTopLeft()
+    public function xTopLeft(): int
     {
         return $this->xTopLeft;
     }
 
-    public function yTopLeft()
+    public function yTopLeft(): int
     {
         return $this->yTopLeft;
     }
 
-    public function xBottomRight()
+    public function xBottomRight(): int
     {
         return $this->xBottomRight;
     }
 
-    public function yBottomRight()
+    public function yBottomRight(): int
     {
         return $this->yBottomRight;
     }
 
-    public function coords()
+    public function coords(): string
     {
         return implode(',', [
             $this->xTopLeft,
diff --git a/src/Areas.php b/src/Areas.php
index d3423a0..48c8be8 100644
--- a/src/Areas.php
+++ b/src/Areas.php
@@ -6,12 +6,9 @@
 
 class Areas
 {
-    /**
-     * @var array
-     */
-    protected $areas = [];
+    protected array $areas = [];
 
-    public static function from($xTopLeft, $yTopLeft, $xBottomRight, $yBottomRight)
+    public static function from($xTopLeft, $yTopLeft, $xBottomRight, $yBottomRight): static
     {
         $areas = new static;
         $areas->push(new Area($xTopLeft, $yTopLeft, $xBottomRight, $yBottomRight));
@@ -19,21 +16,21 @@ public static function from($xTopLeft, $yTopLeft, $xBottomRight, $yBottomRight)
         return $areas;
     }
 
-    public function add($xTopLeft, $yTopLeft, $xBottomRight, $yBottomRight)
+    public function add($xTopLeft, $yTopLeft, $xBottomRight, $yBottomRight): self
     {
         $this->areas[] = new Area($xTopLeft, $yTopLeft, $xBottomRight, $yBottomRight);
 
         return $this;
     }
 
-    public function push(Area $area)
+    public function push(Area $area): self
     {
         $this->areas[] = $area;
 
         return $this;
     }
 
-    public function toDelimitedString($join)
+    public function toDelimitedString(string $join): string
     {
         $coords = array_map(function(Area $area) {
             return $area->coords();
diff --git a/src/Camelot.php b/src/Camelot.php
index 0e9f24e..9342175 100644
--- a/src/Camelot.php
+++ b/src/Camelot.php
@@ -12,139 +12,141 @@
 
 class Camelot
 {
-    const MODE_LATTICE = 'lattice';
-    const MODE_STREAM = 'stream';
+    public const MODE_LATTICE = 'lattice';
+    public const MODE_STREAM = 'stream';
 
     /**
      * lattice | stream
      *
      * @var string
      */
-    protected $mode;
+    protected string $mode;
 
     /**
      * csv | json | excel | html | sqlite
      *
      * @var string
      */
-    protected $format = 'csv';
+    protected string $format = 'csv';
 
     /**
      * @var string
      */
-    protected $path;
+    protected string $path;
 
     /**
      * @var string
      */
-    protected $pages;
+    protected string $pages = '';
 
     /**
      * @var string
      */
-    protected $password;
+    protected string $password = '';
 
     /**
      * @var string
      */
-    protected $processBackgroundLines;
+    protected string $processBackgroundLines = '';
 
     /**
      * @var string
      */
-    protected $plot;
+    protected string $plot = '';
 
     /**
-     * @var Areas
+     * @var Areas|null
      */
-    protected $areas;
+    protected ?Areas $areas = null;
 
     /**
-     * @var Areas
+     * @var Areas|null
      */
-    protected $regions;
+    protected ?Areas $regions = null;
 
     /**
      * @var array
      */
-    protected $columnSeparators;
+    protected array $columnSeparators = [];
 
     /**
      * @var bool
      */
-    protected $splitAlongSeparators;
+    protected bool $splitAlongSeparators = false;
 
     /**
      * @var bool
      */
-    protected $flagSize;
+    protected bool $flagSize = false;
 
     /**
      * @var string
      */
-    protected $unwantedCharacters;
+    protected string $unwantedCharacters = '';
 
     /**
-     * @var int
+     * @var int|null
      */
-    protected $edgeTolerance;
+    protected ?int $edgeTolerance = null;
 
     /**
-     * @var int
+     * @var int|null
      */
-    protected $rowTolerance;
+    protected ?int $rowTolerance = null;
 
     /**
-     * @var int
+     * @var int|null
      */
-    protected $lineScale;
+    protected ?int  $lineScale = null;
 
     /**
      * @var array
      */
-    protected $textShift;
+    protected array $textShift = [];
 
     /**
      * @var array
      */
-    protected $copyTextDirections;
+    protected array $copyTextDirections = [];
 
-    public function __construct($path, $mode = null)
+    public function __construct(string $path, ?string $mode = null)
     {
         $this->path = $path;
         $this->mode = $mode ?? static::MODE_LATTICE;
     }
 
-    public static function lattice($path)
+    public static function lattice(string $path): static
     {
         return new self($path);
     }
 
-    public static function stream($path)
+    public static function stream(string $path): static
     {
         return new self($path, static::MODE_STREAM);
     }
 
-    public function pages(string $pages)
+    public function pages(string $pages): self
     {
         $this->pages = $pages;
 
         return $this;
     }
 
-    public function csv()
+    public function csv(): self
     {
         $this->format = 'csv';
+
+        return $this;
     }
 
-    public function save($path)
+    public function save(string $path): array
     {
         // run the process
         $this->runCommand($path);
         return $this->getFilesContents($path);
     }
 
-    public function extract()
+    public function extract(): array
     {
         $dir = (new TemporaryDirectory())->create();
         $path = $dir->path('extract.txt');
@@ -158,7 +160,7 @@ public function extract()
         return $output;
     }
 
-    protected function getFilesContents($filePath)
+    protected function getFilesContents(string $filePath): array
     {
         $pathInfo = pathinfo($filePath);
         $filename = $pathInfo['filename'];
@@ -172,37 +174,38 @@ protected function getFilesContents($filePath)
         $output = [];
 
         foreach ($files as $file) {
-            $output[] = $content = file_get_contents($directory . DIRECTORY_SEPARATOR . $file);
+            $output[] = file_get_contents($directory . DIRECTORY_SEPARATOR . $file);
         }
 
         return $output;
     }
 
-    protected function runCommand($outputPath = null)
+    protected function runCommand(?string $outputPath = null): void
     {
         $output = $outputPath ? " --output $outputPath" : "";
         $mode = " {$this->mode}";
         $pages = $this->pages ? " --pages {$this->pages}" : "";
         $password = $this->password ? " --password {$this->password}" : "";
+        $format = $this->getFormat();
 
         // Advanced options
         $background = $this->processBackgroundLines ? " --process_background " : "";
         $plot = $this->plot ? " -plot {$this->plot}" : "";
         $split = ($this->splitAlongSeparators && $this->columnSeparators) ? " -split" : "";
         $flagSize = $this->flagSize ? " -flag" : "";
-        $columnSeparators = $this->columnSeparators ? " -C " . implode(",",$this->columnSeparators) : "";
+        $columnSeparators = count($this->columnSeparators) > 0 ? " -C " . implode(",",$this->columnSeparators) : "";
         $strip = $this->unwantedCharacters ? " -strip '{$this->unwantedCharacters}'" : "";
-        $edgeTolerance = $this->edgeTolerance ? " -e {$this->edgeTolerance}" : "";
-        $rowTolerance = $this->rowTolerance ? " -r {$this->rowTolerance}" : "";
-        $lineScale = $this->lineScale ? " -scale {$this->lineScale}" : "";
-        $textShift = $this->textShift ? " -shift " . implode(" -shift ", $this->textShift) : "";
-        $copyText = $this->copyTextDirections ? " -copy " . implode(" -copy ", $this->copyTextDirections) : "";
+        $edgeTolerance = (null !== $this->edgeTolerance) ? " -e {$this->edgeTolerance}" : "";
+        $rowTolerance = (null !== $this->rowTolerance) ? " -r {$this->rowTolerance}" : "";
+        $lineScale = (null !== $this->lineScale) ? " -scale {$this->lineScale}" : "";
+        $textShift = count($this->textShift) > 0 ? " -shift " . implode(" -shift ", $this->textShift) : "";
+        $copyText = count($this->copyTextDirections) > 0 ? " -copy " . implode(" -copy ", $this->copyTextDirections) : "";
 
         // Table areas/regions
         $areas = $this->areas ? $this->areas->toDelimitedString(" -T ") : "";
         $regions = $this->regions ? $this->regions->toDelimitedString(" -R ") : "";
 
-        $cmd = "camelot --format csv {$output}{$pages}{$password}{$flagSize}{$split}{$strip}{$mode}{$textShift}{$copyText}{$lineScale}{$edgeTolerance}{$rowTolerance}{$background}{$plot}{$areas}{$regions}{$columnSeparators} " . $this->path;
+        $cmd = "camelot --format {$format} {$output}{$pages}{$password}{$flagSize}{$split}{$strip}{$mode}{$textShift}{$copyText}{$lineScale}{$edgeTolerance}{$rowTolerance}{$background}{$plot}{$areas}{$regions}{$columnSeparators} " . $this->path;
 
         $process = Process::fromShellCommandline($cmd);
         $process->run();
@@ -212,69 +215,66 @@ protected function runCommand($outputPath = null)
         }
     }
 
-    public function json()
+    public function json(): self
     {
         $this->format = 'json';
 
         return $this;
     }
 
-    public function html()
+    public function html(): self
     {
         $this->format = 'html';
 
         return $this;
     }
 
-    public function sqlite()
+    public function sqlite(): self
     {
         $this->format = 'sqlite';
 
         return $this;
     }
 
-    public function excel()
+    public function excel(): self
     {
         $this->format = 'excel';
 
         return $this;
     }
 
-    public function getFormat()
+    public function getFormat(): string
     {
         return $this->format;
     }
 
-    public function getMode()
+    public function getMode(): string
     {
         return $this->mode;
     }
 
-    /**
-     * @return string
-     */
-    public function getPages()
+    public function getPages(): string
     {
         return $this->pages;
     }
 
-    public function password($password)
+    public function password(string $password): self
     {
         $this->password = $password;
 
         return $this;
     }
 
-    protected function throwError($path, string $getErrorOutput, string $cmd)
+    protected function throwError(string $path, string $getErrorOutput, string $cmd): void
     {
-        if (strpos($getErrorOutput, 'file has not been decrypted') > -1) {
+        if (false !== stripos($getErrorOutput, 'file has not been decrypted')) {
             throw new PdfEncryptedException($path);
         }
 
         throw new \Exception("Unexpected Camelot error.\r\nCommand: $cmd\r\nOutput:\r\n-----------\r\n$getErrorOutput");
     }
 
-    public function processBackgroundLines()
+    public function processBackgroundLines(): self
     {
         if ($this->mode !== static::MODE_LATTICE) {
             throw new BackgroundLinesNotSupportedException($this->mode);
@@ -285,7 +285,7 @@ public function processBackgroundLines()
         return $this;
     }
 
-    public function plot($kind = 'text')
+    public function plot(string $kind = 'text'): self
     {
         $this->plot = $kind;
 
@@ -294,21 +294,21 @@ public function plot($kind = 'text')
         return $this;
     }
 
-    public function inAreas(Areas $areas)
+    public function inAreas(Areas $areas): self
     {
         $this->areas = $areas;
 
         return $this;
     }
 
-    public function inRegions(Areas $regions)
+    public function inRegions(Areas $regions): self
     {
         $this->regions = $regions;
 
         return $this;
     }
 
-    public function setColumnSeparators(array $xCoords, $split = false)
+    public function setColumnSeparators(array $xCoords, bool $split = false): self
     {
         if ($this->mode !== static::MODE_STREAM) {
             throw new ColumnSeparatorsNotSupportedException($this->mode);
@@ -320,49 +320,49 @@ public function setColumnSeparators(array $xCoords, $split = false)
         return $this;
     }
 
-    public function flagSize($flag = true)
+    public function flagSize(bool $flag = true): self
     {
         $this->flagSize = $flag;
 
         return $this;
     }
 
-    public function strip(string $unwantedCharacters)
+    public function strip(string $unwantedCharacters): self
     {
         $this->unwantedCharacters = $unwantedCharacters;
 
         return $this;
     }
 
-    public function setEdgeTolerance(int $edgeTolerance)
+    public function setEdgeTolerance(int $edgeTolerance): self
     {
         $this->edgeTolerance = $edgeTolerance;
 
         return $this;
     }
 
-    public function setRowTolerance(int $rowTolerance)
+    public function setRowTolerance(int $rowTolerance): self
     {
         $this->rowTolerance = $rowTolerance;
 
         return $this;
     }
 
-    public function setLineScale(int $lineScale)
+    public function setLineScale(int $lineScale): self
     {
         $this->lineScale = $lineScale;
 
         return $this;
     }
 
-    public function shiftText(...$directions)
+    public function shiftText(...$directions): self
     {
         $this->textShift = $directions;
 
         return $this;
     }
 
-    public function copyTextSpanningCells(...$directions)
+    public function copyTextSpanningCells(...$directions): self
     {
         $this->copyTextDirections = $directions;
 
diff --git a/src/Exceptions/NotSupportedException.php b/src/Exceptions/NotSupportedException.php
index 803bfd3..d337e12 100644
--- a/src/Exceptions/NotSupportedException.php
+++ b/src/Exceptions/NotSupportedException.php
@@ -6,12 +6,12 @@
 
 abstract class NotSupportedException extends \Exception
 {
-    public function __construct($mode)
+    public function __construct(string $mode)
     {
         parent::__construct("Processing mode '$mode' does not support ". $this->featureName() . ". It can be used with ". $this->validModesString().".");
     }
 
-    private function validModesString()
+    private function validModesString(): string
     {
         $validModes = $this->validModes();
         $modes = implode(' | ', $validModes);
diff --git a/src/Exceptions/PdfEncryptedException.php b/src/Exceptions/PdfEncryptedException.php
index 2bebee6..91902a6 100644
--- a/src/Exceptions/PdfEncryptedException.php
+++ b/src/Exceptions/PdfEncryptedException.php
@@ -8,7 +8,7 @@
 
 class PdfEncryptedException extends \Exception
 {
-    public function __construct($filePath)
+    public function __construct(string $filePath)
     {
         parent::__construct("The PDF $filePath is encrypted and cannot be read without a password. Supply a password with \$camelot->password('my_password').");
     }
diff --git a/tests/Feature/AdvancedProcessingTest.php b/tests/Feature/AdvancedProcessingTest.php
index 5061a78..e5dff2f 100644
--- a/tests/Feature/AdvancedProcessingTest.php
+++ b/tests/Feature/AdvancedProcessingTest.php
@@ -109,7 +109,7 @@ public function strip_characters_from_text()
             ->extract();
 
         $csv = $this->csvFromString($tables[0]);
-        $this->assertEquals('Robbery', $csv->fetchOne(12)[0]);
+        $this->assertEquals('Robbery', $csv->fetchOne(11)[0]);
     }
 
     /**
diff --git a/tests/Feature/ParseExportTest.php b/tests/Feature/ParseExportTest.php
index 0b82082..7131143 100644
--- a/tests/Feature/ParseExportTest.php
+++ b/tests/Feature/ParseExportTest.php
@@ -29,7 +29,7 @@ public function can_set_stream_mode()
             ->extract()[0];
 
         $csv = $this->csvFromString($tables);
-        $csv->setHeaderOffset(1);
+        $csv->setHeaderOffset(0);
 
         $this->assertCount(8, $header = $csv->getHeader());
         $this->assertEquals('States-A', $header[0]);