Fix 7.3.1 Changelog title (ruflin#2157)

Prepare for release v7.3.0 (ruflin#2126)

Prepare release 7.2.0 (ruflin#2105)

Prepare 6.2.1 (ruflin#2062)

Prepare v7.1.5 (ruflin#2060)

Prepare release v7.1.4 (ruflin#2054)

Prepare 7.1.3 release (ruflin#2045)

Prepare for v7.1.2 (ruflin#2000)

Add changelog entry for changes since 6.1.5

Prepare 7.1.1 release (ruflin#1924)