Initial scafolding for demo wave program
Implement demoWaveAt and send to marquise

Uses code previously in v1 ReaderDaemon. Developed while pairing
with Thomas Sutton and Katie McLaughin.
Move getCurrentTimeNanoseconds to vaultaire-common
Fix sine wave period

Convert to seconds before feeding into angular sine function
calibrated to seconds.

Fixed with help of Katie McLaughlin.
Refine debug output formatting
Bump trifecta dependency to latest release
Merge pull request #35 from anchor/wip/sine-wave

Small program to emit demo sine wave for testing purposes