time_circuit: some flux changes
Merge branch 'master' of https://github.com/deater/vmw-meter
lib: update ht16k33 keypad code

Poll the internet value before reading the values.  In theory
this is lower overhead.

Was seeing problems where if you held down a key it was repeating rather
than staying down.

Turns out it's just a bad idea to read out the keypad faster than the 20ms
rate that the kt16k33 updates itself.
time_circuit: Update with new flux capactitor and spedometer code