avoid adding "raise exception in blank line or the line which end
with :.
Add docker for displaying output. And add indent for edit.
Merge branch 'master' of https://github.com/ya790206/RunningEditor
refactor editor.
Use pyquote as default code editor.
modify for pep8.
Merge branch 'master' of https://github.com/ya790206/RunningEditor
Fix bug for SimpleTextEdit indent.