Roadmap progressing faster than expected

This release is a very fast fix for issue #1. This will guarantee a good download of animated stickers, but they will now be in .apng instead of .gif. This is not the final workaround, and I will eventually add automatic conversion using apng2gif but that will take some time. When I finish that, #1 can be closed.

If you hadn't had a problem downloading your .gif stickers so far, you probably don't need this.

Note: Releases come with too many unnecessary files, will be moving those to a separate branch soon(tm).