update and fix BreathingRateTimePoint::DateTime type (it contains onl…

…y the date)

add AllActivityTypes method

Update public API, create v2 (galeone#6)

Fix OxygenSaturation return type. DateTime -> Date

SleepLog: fix date-time types

Remove duplicated HeartRateZones. Fix UserHeartRateTimeseries. Update

update deps and complete decouple from storage