added Cache-Control header to SpaceAPI endpoint
use maps in status.json endpoint
use maps in SpaceAPI endpoint
replaced erlsha2 dependency with OTP crypto
added water level monitoring
Merge remote-tracking branch 'origin/maps' into vsza

Conflicts:
	src/hacksense_status.erl
added missing hack2o module from e7ea327
fix crash on esl-erlang > 17.0, thx @0x20c24