Add support for FilterMaintenanceAccessory

[#124](#124)

Author: gjvanderheiden

CHANGES.md

@@ -13,7 +13,7 @@
 
 * Valid values are supported for enum characteristics instead of min and max values
 * Supported valid states for Thermostat, SecuritySystem, HeaterCooler and HumidifierDehumidifier [#108] [#120](https://github.com/hap-java/HAP-Java/pull/120)
-* Support for FilterMaintenance. Can be used as a linked service for a Air Purifier  [#124](https://github.com/hap-java/HAP-Java/pull/124)
+* Support for FilterMaintenance. Can be used as a linked service for an Air Purifier  [#124](https://github.com/hap-java/HAP-Java/pull/124)
 
 # HAP-Java 1.1.5
 
@@ -28,6 +28,7 @@
 * Fix various spec violations and optimize communications to improve performance [#65](https://github.com/hap-java/HAP-Java/pull/65)
 * Fix a pairing issue in which HAP-Java could listen on a different interface than that which it advertises [#67](https://github.com/hap-java/HAP-Java/pull/67)
 * Allow window covering to be used without optional characteristics. The inclusion of `HoldPositionCharacteristic` did terrible things, and we're still not sure why. Addressed [#56](https://github.com/hap-java/HAP-Java/pull/56)
+* Air Purifier didn't support rotation speed characteristics. [#124](https://github.com/hap-java/HAP-Java/pull/124)
 
 ## New and improved