* Add custom panic hook. Print backtrace and thread, error info on panic.
* use sync_channel and SyncSender
* nit fixes and cleanup
* disable custom panic hook while running tests
* make separate errors.rs file and address other review comments
* improve panic message
* debug: does increasing time between snapshots make tests pass? (this is temporary)
* fix(tests): suspend before sending quit command
* fix(tests): add missing use
* style(format): commas are important apparently
* fix(tests): can we get away with reducing the QUIT suspense time?
* fix(tests): can we get away with 50?
Co-authored-by: Aram Drevekenin <aram@poor.dev>
