* start messing about with different mp4 metadata extraction
* heyyooo it works
* add test cow
* move useful multierror to gtserror package
* error out if video doesn't seem to be a real mp4
* test parsing mkv in disguise as mp4
* tidy up error handling
* remove extraneous line
* update framerate formatting
* use float32 for aspect
* fixy mctesterson
* use readcloser for content.Content
* call media postdata function no matter what
* return a readcloser from data func
* tidy of logic of readertostore
* fix whoopsie
* select emoji using image_static_url
* use updated on AP emojis
* allow refetch of updated emojis
* cheeky workaround for test
* clean up old files for refreshed emoji
* check error for originalPostData
* shorten GetEmojiByStaticImageURL
* delete kirby (sorry nintendo)
