Bugfixes galore
- Update to libdot 1.17. Better handling for Unicode combining characters.
- Update to hterm 1.71. Better handling for Unicode combining characters.
- Improve startup display to not flash so much white.
- Promote some array helpers to new lib.array API.
- Promote binary<->base64 helpers for all stream classes.
- Refactor Stream.asyncRead API to unify duplicate implementations.