Add 'open cmd and cd to path in clipboard'
Use 'start ..' to activate chrome
Dispatch unknown command to hotkeys (directory)
Ctrl-j to execute
Eager execute (i.e. execute when type-in matched)

Commands startswith '!' must be fully matched (e.g. quit)
Fix eager match & ambiguous conflict
Add key simulation functions (but not yet used)

http://stackoverflow.com/questions/13564851/generate-keyboard-events
Enter defaults to execute last command
Make user command prior to built-in command