Move canny from filter to feature
remove auto added __author__ in __init__.py file
fix wrong version number
update api_changes
fix import inside documentation and update TODO
fix import in filter.__init__
move import to avoid infinte recursion (filter import peak that import feature that import filter)
Canny is now deprecated and will be in api_changes in v0.13
hack to avoid circular import when import canny
Merge pull request #1113 from jucoste/move_canny

 Move canny from filter to feature