Minor stuff

Contains:
* rotateLog flag
* A saved Lock
* Nicer channel use
* Monokai default theme
* A quick fix for log4go dumping util.Prof to the console after termbox has shut down the alternate screen, giving some rather borked output.

Everything contained in individual commits for easy handling.
I don't like this change as it'll cause a panic if we do `close(t.dorender)` (which we arguably should)