Update version number and CHANGELOG before 2.5.2 release

Update version number for 2.4.3 release

Update version number for 2.3.4 release

[release]: Release tag

[release]: Release tag

Update version number for release 2.4.2

Update version number for release 2.3.3

Update version number for release 2.2.4

Update version number for release 2.1.6

Update version number for release 2.0.8