Polished organization of the data on the screens

Organization of the screens on the display

• edited params moved to the first screen where they belongs
• gps screen now shows current and stored gps location
• this is preparation for different display sizes and different edited params handling

DateTime class compatibility

• the DateTime class made compatible with adafruit's RTClib DateTime class (original source of this code)
• now you can choose if you want to use local class or RTClib's class

Other

• extreme low sun altitude switchOff time changed from "default date 2000-01-01" to the midnight

Time delay for swich, diagnostic screen

time delay for switch

• added support for delayed switch on/off
• time delay was already part of config params, but didn't worked. now it is working

new diagnostic screen

• diagnostic screen added as screen #3
• implemented "working OK" tests for gps, rtc and eeprom
• uptime counter moved from version info to diag screen

improved robustnes of calculated switch on/off times. now it is working even for extreme altitude settings

some optimizations for smaller code size

Long press resets the device

advanced buttons functionality

• a long-press watch added on select button. holding 3sec+ reintitializes configuration and restarts the device
• auto-repeat feature on (+) and (-) buttons

version string in SolarTimer.ino file

First upload of working application

This is first upload to githup of the already working application.

v1.0

was the first prototype

• geo position was manually set
• time was synchronized from gps
• simple screen with actual date/time, sunset/sunrise and switch on/off times

v1.1

this release

• geo position is reliably set from the gps
• config is persistently stored in eeprom
• added two more screens (+ "select" button) - for gps and app info
• functions for printing numbers and dates