* OpacityEffect example
* Add OpacityEffect example
* Added test for OpacityEffect
* Added changelog entry
* Fix dartdocs
* Reset rounding errors between runs
* Fix test and rounding error
* Update rounding error calculation
* Rounding error should be private
* Bump test epsilon
* Animations, CameraAndViewport, CollisionDetection and Components unified
* Added descriptions to effects
* Rename input games
* Unify input stories
* Add info to parallax section
* Added descriptions to the rendering examples
* Add descriptions to the sprites directory
* Fix utils and rendering section
* Add descriptions to the widgets section
* Delete directory that rebase brought back
* Unify game names
* Added some styleguide docs for examples
* Fix analyze issues
* All files should have _example as suffix
* Made the FollowComponentExample a bit easier to understand
* Change priority of ember