Lower I2C speed to 200kHz as 400kHz is unreliable with longer lines.
TX: make bootup faster
Bump version to 3.6.1
Reorganize flags and fix duplicate watchdog/microPPM flag
Merge pull request #59 from DTFUHF/development

Reorganize flags and fix duplicate watchdog/microPPM flag
Merge branch 'development'
Merge branch 'master' into 20-standalone

Conflicts:
	I2C.h
Merge branch '20-standalone' into 21-bool
Merge branch '21-bool' into 22-printf
Merge branch '22-printf' into 23-wiring
Merge branch '23-wiring' into 24-c-only