FIXME

Libre 3:
- Gen2 .getSessionInfo outpassed by new certificate data and ECDH ephemeral keys (whiteCryption's Secure Key Box)
iOS 15:
- "NFC scan success sheet displayed when NFC scan time out" (https://developer.apple.com/forums/thread/687264)
Xcode 13:
- "No 'async' operations occur within 'await' expression" warnings
Playgrounds 4:
- frequent crashes while unwrapping optionals
- missing entitlements for HealthKit, NFC and Bluetooth background mode
Mac Catalyst:
- log bogging down too early
@Published classes nonsense
the new Libre2() subclass is not instantiated specifically in Transmitters
@AppStorage(selectedTab) prevents managing the "More..." fifth tab item
Console's Clear button must be tapped twice

TODO

Apple Watch app: snapshots, workout and extended runtime background sessions, complications
Libre 3 / Gen2:
- native and/or online en/decoding
scrollable graph, offline trend arrow, landcape mode, realtime RSSI
smooth the historic values and project the trend ones (see LibreTransmitter)
log: limit to a number of readings, autoscroll to bottom, prepend time, Share menu, record to a file, add Logger support
HealthKit, Nightscout: more than just a few ported dozen lines of code
profile and avoid retain cycles
make use of Actors, Combine, TabularData, ...