Check that all of the following work before a release:

* Runs under Python 2.5, 2.6 and 3.1 (after 2to3).

* Save

* Rewind

* Pastebin

* Pager

* Inspect source

* History

* Tab completion

* Argument inspection

* All keybinds

* All packaged themes

* Command line arguments correctly passed to scripts

* Delegate to standard Python appropriately

* GTK port (and, when implemented, all of the above for GTK port)

* Update CHANGELOG

* Update __version__