Add event.remove_handler and event.remove_handlers.  Untested.  Also needs visual inspection by someone (not me).  Docstrings make the methods sound much more tricky and evil than they really are.  They just behave like "remove" equivalent of (set|push)_handler[s].
Add event.remove_handler and event.remove_handlers.  Untested.  Also needs
visual inspection by someone (not me).  Docstrings make the methods sound much
more tricky and evil than they really are.  They just behave like
"remove" equivalent of (set|push)_handler[s].

Also removed a list copy and empty dict creation that seem unnecessary.

qbektrix/pyglet,Austin503/pyglet,gdkar/pyglet,mpasternak/pyglet-fix-issue-518-522,mpasternak/pyglet-fix-issue-518-522,kmonsoor/pyglet,gdkar/pyglet,odyaka341/pyglet,gdkar/pyglet,shaileshgoogler/pyglet,mpasternak/michaldtz-fix-552,odyaka341/pyglet,qbektrix/pyglet,qbektrix/pyglet,google-code-export/pyglet,google-code-export/pyglet,mpasternak/michaldtz-fixes-518-522,Alwnikrotikz/pyglet,gdkar/pyglet,arifgursel/pyglet,xshotD/pyglet,google-code-export/pyglet,kmonsoor/pyglet,google-code-export/pyglet,cledio66/pyglet,mpasternak/michaldtz-fix-552,kmonsoor/pyglet,cledio66/pyglet,xshotD/pyglet,mpasternak/pyglet-fix-issue-518-522,mpasternak/pyglet-fix-issue-552,arifgursel/pyglet,qbektrix/pyglet,cledio66/pyglet,mpasternak/pyglet-fix-issue-552,kmonsoor/pyglet,Austin503/pyglet,google-code-export/pyglet,shaileshgoogler/pyglet,mpasternak/pyglet-fix-issue-552,xshotD/pyglet,Austin503/pyglet,Austin503/pyglet,arifgursel/pyglet,arifgursel/pyglet,odyaka341/pyglet,xshotD/pyglet,shaileshgoogler/pyglet,Alwnikrotikz/pyglet,shaileshgoogler/pyglet,odyaka341/pyglet,mpasternak/michaldtz-fixes-518-522,cledio66/pyglet,Alwnikrotikz/pyglet,mpasternak/michaldtz-fixes-518-522,shaileshgoogler/pyglet,Austin503/pyglet,mpasternak/michaldtz-fix-552,mpasternak/michaldtz-fixes-518-522,qbektrix/pyglet,mpasternak/pyglet-fix-issue-518-522,Alwnikrotikz/pyglet,xshotD/pyglet,cledio66/pyglet,odyaka341/pyglet,mpasternak/michaldtz-fix-552,kmonsoor/pyglet,mpasternak/pyglet-fix-issue-552,Alwnikrotikz/pyglet,gdkar/pyglet,arifgursel/pyglet