What's new in Decent Scale v1.1

New scale features
1. High availability mode.
   1. The scale will turn on by itself when USB power is turned on. It will never turn off, unless told to via BLE.
   2. BLE pairing never times out, so your app can always connect
   3. Combining these two features, your app can enjoy very high reliability, always knowing the scale is on and available to your app.
   4. Your app can automatically and easily recover from power loss.
2. Power on with the square [] button to turn the scale on with no bluetooth (and thus, no blinking blue light)
3. Auto power-off during idle now extended to 10 minutes (previously was 2 minutes) Only applies when using batteries.
4. Purple LED always means "finger detected touching a button"

New BLE features
1. Command to set grams vs ounces (not required to do this manually)
2. Command to see if running on USB power vs batteries
3. Command to find out scale's firmware version number

BLE bug fixes
1. The O button should be under software control via bluetooth, and should not cause taring automatically
2. Sometimes a command sent to the scale is lost, and has to be sent twice (currently worked around invisibly by the app)
3. Cannot determine current battery power via bluetooth
4. Long press on O and [] buttons not differentiated from a short press.