Version 1.1

Force quickfix window to very bottom.
Fire a QuickFixCmdPost event after loading results.
Set xterm title with screen and tmux.
Tweak screen adapter for wider version and distribution support.
Default :Start to b:start.
Ensure identical environment vars (fixing in particular RVM support).
Allow greater compiler detection control with g:dispatch_compilers.
Enhance and fix bugs in compiler detection.
Don't launch iTerm if not already running.
Numerous small bug fixes.