* Fix ansi sequences with no params now default to parmlist of [0].
* Fix flaky behaviour of autoreset and reset_all atexit.
* Fix stacking of repeated atexit calls - now just called once.
* Fix ghastly import problems while running tests.
* 'demo.py' (hg checkout only) now demonstrates autoreset and reset atexit.
* Provide colorama.VERSION, used by setup.py.
* Tests defanged so they no longer actually change terminal color when run.