v0.0.5

Unified OtterCast firmware v0.0.5

This is the first release of unified firmware for all Sochip S3 SoC based
members of the Ottercast family (at the time of writing this includes all
devices). The firmware image of this release can be used on the following
device:
- OtterCast Audio V2
- OtterCast Amp

There are no major functional changes from version v0.0.4.

Changelog:
 - fix OtterCast Amp display dot clock phase
 - set reasonable default brightness on OtterCast Amp display