Refactor completion to use classes and traits
Basic apropos functionality
Add Xdebug stacktraces to compilation-error-regexp setup
Restore input history from .boris_history
add `boris-restart' Emacs command
Make key-bindings more SLIME-like
Add who-{uses,implements,extends} cross-reference commands
FIXME: Comment out array-index completion for now
Refactor command-loop switch statement
WIP: key bindings, menus, class browser
WIP: class hierarchy
Compilation mode by default
More flexible apropos command