Wearable work

Major progress on wearability-related tasks. Found the bug in the async system that was causing crashes. Corrected. The Scheduler refactor has suceeded, and Digitabulum has something that now resembles a purpose-built operating system.

We made the decision to cast the first carriers in silicone. So I spent some time in Blender making models of the mold, and ended my night with some softer work...