Added map collision editor:

GBRO_PlatformerEditor is a separate plugin that allows you to create your map collisions easily within the game itself. No need to create SVGs. This is the BASIC version for now and comes FREE together with the physics platformer plugin. I am working on a paid version with more advanced features that will be released on a later date.

Changes:

- You can still use svg files to create represent your map collision, but the note tag has changed from <platformer:filename.svg> to <mapSvg:filename.svg>. Note that you will still need the <platformer> tag in the notes section of each of your platformer maps.

To open the editor, simply press F1