pspersistence report UsageError's instead of crashing on 'error'

docs: remove -twisted, add -pydb

cleanup and linted a bit :)

Standard numpy/pyplot imports as np/plt by default in -pylab mode

Remove ChangeLog symlink to avoid problems on Windows, the symlink was in SVN

Merge in all development done in bzr since February 16 2008. At that time, a clean bzr branch was started from the SVN tree, but without SVN history. That SVN history has now been used as the basis of this branch, and the development done on the history-less BZR branch has been added and is the content of this merge. This branch will be the new official main line of development in Launchpad (equivalent to the old SVN trunk).

Little patch to have indentation equal to 4 as in classical ipython

Release IPython 0.8.4.

Fully disable -twisted option (though the twshell code remains

changelog