Fix Window import in Chaco in WX app example.
TST: Fix limits for TimeScale test
Merge pull request #138 from enthought/test/fix_tests

Fix limits for TimeScale test
BUG: Always set x_sort_order in do_plot
TST: Add a test to exercise the interactive shell example from the tutorial
Clean up: pyflakes and remove enthought.chaco import. We should and will update the tutorial later.
Merge pull request #141 from enthought/bug/119_x_sort_order

Always set x_sort_order
Typo.
Merge pull request #134 from enthought/tweak_wx_example

Fix Window import in Chaco in WX app example.
Merge branch 'master' of https://github.com/enthought/chaco into python3
Minor py3 compat and other fixes