Merge pull request GPflow#2135 from GPflow/develop

Release 2.10.0

Merge pull request GPflow#2114 from GPflow/develop

Release 2.9.2

Merge pull request GPflow#2104 from GPflow/develop

Release 2.9.1

Merge pull request GPflow#2084 from GPflow/develop

Release 2.9.0

Merge pull request GPflow#2076 from GPflow/develop

Release 2.8.1

Merge pull request GPflow#2068 from GPflow/develop

Release 2.8.0

Use PyPi token for package uploading (GPflow#2043)

Release 2.7.1 preparation (GPflow#2048)

Merge pull request GPflow#2045 from GPflow/develop

Release 2.7.0 (again)

Sc336/version numbers (GPflow#2026)

* Update version

* Update VERSION