Replace gmail with gmx
...
pep8
When detecting the encoding of HTML documents, if the document contains multiple charset declarations, prefer the HTML 5 syntax to the HTML 4 syntax. Fixes #1364961 [Unicode Conversion on Amazon after Release 2.x](https://bugs.launchpad.net/calibre/+bug/1364961)
Make requests available on file hosting servers
Upload releases to GitHub as well
When using the Embed Metadata or Polish Books tools to update metadata, fix custom columns values not being cleared
version 2.2
Also clear languages when updating metadata in EPUB
Only keep the most recent release on GitHub

GitHub claims they have no disk quotas for releases, but I dont want to
rely on that.