Prepare 7.0.0 release (ruflin#1784)

Update changelog accordingly.

Prepare for release 7.0.0-beta.4 (ruflin#1768)

Prepare for release 7.0.0-beta.3

Prepare 7.0.0-beta2 release (ruflin#1727)

Prepare 7.0.0-beta1 release (ruflin#1685)

Prepare for release v5.3.6 (ruflin#1658)

Prepare release 6.1.1 (ruflin#1602)

Merge pull request ruflin#1600 from ruflin/prepare-v-5-3-5

Prepare for release v5.3.5

Merge pull request ruflin#1594 from ruflin/prepare-release-5-3-4

Prepare for release v5.3.4

Fix ruflin#1559 - Backported from ruflin#1561 (ruflin#1572)

* Fix ruflin#1559 - Backported from ruflin#1561