Maintenance Update

Hello everyone,

Here's a small maintenance release to address a few issues and tie everyone over until our next big release.

• Added function to clear the whole scene to empty tiles.
• Tiles with transparent pixels containing color data are now rendered correctly.
• Minor documentation appearance improvements.
• Updated documentation to include changes.
• Lowered price to better accommodate indie developers and hobbyists. :)

To update to the latest version:

1. Download and extract the new version to a directory
2. Copy the "projects" directory to the new versions directory
3. Keep the old directory as backup, and enjoy the new version! :)