Merge remote-tracking branch 'julusian/tv2-2.3' into tv2-2.3

Remove unnecessary check that is already done in load_library()

Implemented NDI Producer and Consumer

Update CHANGELOG.md

Tagged 2.1.0 Beta 2

[version.tmpl] Changed tag to Beta 1

Former-commit-id: 92e13a8

Updated changes and updated version to stable.

Former-commit-id: e9fc25a

Updated version

Former-commit-id: b0a44c2

Fixed broken CG UPDATE

Former-commit-id: 81ee686

Tagged 2.0.6