Create tag 9.8.0-1

Create tag 9.8.0

docs: update version numbers and release date

Create tag 9.7.0

Tag v9.6.2

Create tag 9.6.2RC1

Create tag 9.6.1

Create tag 9.6.0

Update docs for 9.5.1 release

Keep CITATION details up to date

- Bumped version number
- Updated affiliation for Thomas and Kristian, reflecting recent change
  in agency name