Silly PR. Some colliders added to cool demo
Merge pull request #661 from jtorrente/silly

Silly PR. Some colliders added to cool demo
Added FocusItem and FocusItemList.
DropIntoArray action and test.
Added FrameWidget.
Added FramesTimeline.
Added FramesTimelineTest.
Added description to Frame#time .
Added StretchableButton, you can change it size by dragging.
Comments addressed.
Adjusted EditorGameAssets#resolve and test fix.
Merge pull request #667 from gorco/StrButton

Added StretchableButton.
Merge pull request #663 from RotaruDan/FramesTimeline

Frames timeline
Merge pull request #665 from jtorrente/boundingarea

Bounding areas
MoveByEntity component. Just updates the entity's position according to the speed of a target
Parallax. A special case of MoveByEntity that updates an entity's position in opposed direction to current camera's speed
ChaseEntity component. Tries to keep the entity within max-min distance from target.
To do: take PathBoundary into account, if present.
Little refactoring in Velocity Component
Simple test