* added update information
* upload zsync
* set version of appimage
* release: do not execute steps which needs a token when not provided
* set the appimage output name directly in the recipe file
* add metainfo file in every Linux package
* update metainfo file
* set categories in the metainfo file
* add both .metainfo.xml and .appdata.xml files because it is the old standard still wanted by some things
* actually use WerWolv's repository for AppImage updates
* rename metainfo files
* Typo : appdata and not appinfo
* split screenshots
