v0.7.0

Small improvements and extensions for Week 7.

Changelog

• Overhaul of 264.audiotest~
  • clearer UI & larger audio status button
  • enable menus for input/output devices
  • add hinting & annotation
• Tweak 264.trigger~ flashing indicator UI
• Add inlet to allow programmatic file loading in 264.sfplay~

264.audiotest~ before to after