version 2.3
Add a retry for setting the label on github
Fix for regression in 2.3 connecting with Calibre Companion when deleting books caused by the performance improvement in 829447f01fd34dd780a7ee6083cdd53b751e5c40
Jagran Josh by Krittika Goyal
New author_sorts() formatter function. Returns the author sort strings from the authors table for the authors in the book.
Merge branch 'master' of https://github.com/cbhaley/calibre
Fix #1368794 [Wrong coloring in Title sort (possibly related to 1367943)](https://bugs.launchpad.net/calibre/+bug/1368794)