Lapis-chan v1.2.0 - Media Release

This release adds support for WEBM videos which are categorised as images, and MP3, WAV, OGG which are categorised as audio. If a board supports uploading files, you can determine which categories an individual board accepts.

Due to this addition, Lapis-chan now depends on FFMpeg.

Make sure to run $ lapis migrate after updating since there is also a database schema change.