Fresh start for v2
Rewrite core
Rewrite bin/busted to match core v2
Clean up style of specs and languages
Clean up setup and move `./src` to `./busted`

This allows one to use `bin/busted` to run without installing.
Zsh autocompletion
Implement tags
Add output handlers
Clean up remaining specs
Set up 2.0.rc0 version
Fix exit code and error output

Closes issues #252, and also fixes cases where bad syntax in tests would
cause the output handler to explode. Handles bad syntax gracefully now.
exit 0 or 1
Fix problem with table debug messages
Merge remote-tracking branch 'upstream/master'

Conflicts:
	bin/busted_bootstrap
fixed coapp package revision, and busted cl runner