tower: beginnings of procifying task interface. (Still broken in 100 ways.)
continuing procifying, now assembly is stubbed out into the freertos implementation
procify: dataports and signals no longer expose schedule to user
procify: tasks actually generate some reasonable looking c code
procify: signal assembly works
procify: implement onChannelV api
tower: deprecate withPeriod, pass Integer to onPeriod
bump to version 0.6.0.0