- dotfile pretty print session defaults
- deriving debug was removed for processes and sessions, although it would be
nice to manually request this if possible
- program trait
- more trace! log messages in process run loops
- finer time granularity (microseconds?)
- link to sessions in program dotfile output
- program dotfile is a state machine dotfile from macro-machines-- this may
need to be modified or else link by parsing and modifying the dotfile
output itself
- use crossbeam-channels
- replace standard library mpsc
- possibly add mpmc channel types
