Based unneeded header.
Updated semver macros.

- Masks are now unsigned.
- Masks are now in final position, rather than aligned to bit 0.
Added unit tests for semver.
Merge branch 'master' into audio
audio: Brainstormed more audio format mechs.

- Settled on just always specifying all template params.
audio: Cleaned up sample format mech.
meta: meta_x now uses ctor inheritance.
Merge branch 'master' into audio
audio sandbox: First rough sines coming out of alsa.