[matplotlib-devel] Time to delete backend_qt (QT3)?

[Eric F. <ef...@ha...>]

Is there any good reason *not* to delete support for Qt3 from master? 
Is anyone who is using it likely to be able to upgrade to the next mpl 
release, and yet *not* be able to install Qt4 and its bindings?  Note 
that ipython no longer supports Qt3.

Eric