Each flag was previously a whole byte, now all of the flags only take up
4 bytes as they are represented by bit masks.
This is cleaner because the different kind of flags are now separated.
Additionally this changes the behaviour of arming slightly. When using
a switch to arm the aircraft will not arm unless the switch has been in
the off state once. This prevents arming if you power the aircraft with
a low throttle and the switch in the on position.
state. Mutually exclusive with leds that show MODE.
Use blue to indicate armed, green for disarmed.
Leds not configured for ARM_STATE or MODE will be off by default.
The example combines corner LEDs with ARM_STATE and INDICATOR. This
results in the corner leds showing arm state and then being overridden
with an indicator color as needed.
Cleaned up the battery warning checking as it was being calculated twice
instead of just once per battery warning state cycle.
Updated the code so that modes are shown when disarmed. Any led's
without the MODE flag will then show the armed state. In the config in
this commit that results in the corner LEDs being GREEN when disarmed
and OFF when armed.
Added documentation.
Added LED_STRIP feature, can only be enabled under certain circumstances
depending on target due to pin/timer mappings - see documentation.
