enforce using QT4 with traits-enaml
GuiTestAssistant.tearDown method tweaked

- still one failure in TestGuiTestAssistant.test_event_loop_until_condition -
  not sure where it comes from yet ...
super basic test for the EnableCanvas widget
Merge branch 'master' into test-enable-canvas

Conflicts:
	traits_enaml/testing/gui_test_assistant.py
adding enable as a dev requirement
need swig to build enable
Add test checkout for the correct resolution of the EnableCanvas proxy.
Merge pull request #22 from enthought/enable-canvas-proxy-test

Add test checkout for the correct resolution of the EnableCanvas proxy.
Merge branch 'master' into test-enable-canvas

Conflicts:
	dev_requirements.txt
Merge branch 'test-enable-canvas' of github.com:enthought/traits-enaml into test-enable-canvas
Merge pull request #21 from enthought/test-enable-canvas

Adding a test for the enable canvas widget