Todd's bug fixes for render components.
Fixed z-index bugs for pinned animations and images.
Added "offsetZ" to render components so that z can be specified relative to the owner's z-index.
Added collision messages for entities in a group and Todd's fix for message removal of detroyed components and render component scaling.
Audio now supports an array of sounds in place of a single sound per message.
Support for preloading a scene.
Fixed bugs in positioning pinned render components.
Added support for loading a list of assets apart from the config.json file.
Changed default camera mode to forwardFollow and made camera-follow-me.js use the component creator so aliases can be used instead of a custom message property in the JSON definition.
Removed delayed destroy of audio component.
Removed messageMap from DOM component since it now supports the equivalent "aliases" property.
Added "handleEdge" to controller for smoother mouse-based joystick support, and minor bug fixes.
New Tween component.
Merge branch 'master' of https://github.com/gopherwood/Platypus
Todd's bug fixes and additions.
Merge branch 'master' of https://github.com/gopherwood/Platypus
Changed example so it loads small on mobile devices (rather than touch).
Added support to the compiler for games not existing as a folder's index.
Merge branch 'master' of https://github.com/PBS-KIDS/Platypus
Removed old SoundJS overrides and made the dom-element component a bit more intuitive by allowing key/value pairs to be sent into both the set-style and set-attribute event handlers.