BUGFIX - AHI incorrect when FULLAHI enabled

fixed.
Section to be revisited for improvements in future

1.5.2.4 comiled GUI for testers

Merge pull request ShikOfTheRa#176 from ShikOfTheRa/CF-support

Looptime/Profile/PID controller support

Dev version uplift

Complied GUI for beta test release

R1.5.2.1

GUI for beta test

Complied...

Update Features.md

Fontload option added to config.h

Added option to upload fonts using a simple define in config.h
Supports basic fonts only for ease of maintenance

Legacy documentation update

Update GUI