Clean up utils
Use six
Use get_stage via LocalProxy
Remove redundant code
Import oops
Remove redundant code
Match find_feed_and_entry function signature
Fix #54
Refactoring initializing entry generators
Fix #54
Merge pull request #56 from teddychoi/0.2-maintenance

Fix #54
Merge pull request #57 from teddychoi/master

Refactoring codes initializing entry generators
Merge branch '0.2-maintenance'
libsass>=0.6.0 requires C++11
Merge branch '0.2-maintenance'

Conflicts:
	.travis.yml