1.1.0

This is the long-waited-for release containing the option to create backups of supergroups and channels. Those are not automatically activated; you have to use the options --with-supergroups and / or --with-channels. Please note that

• only supergroups / channels within your last 100 active chats will be downloaded,
• all of their messages will be downloaded (not just the ones you "witnessed", but every message ever sent in that channel / supergroup),
• they will be downloaded after the normal message backup is complete.

Also, this release contains a few bugfixes:

• Some handling for timeout errors, hopefully it's enough to keep those files-timing-out problems at bay.
• The HTML export now shows the stats in Firefox as well.

Thanks for everyone helping by sending in bug reports, running additional tests and/or testing the new release.