Merge pull request #374 from openeuropa/release-2.20.0

Release 2.20.0 changelog.

Merge pull request #372 from openeuropa/release-2.19.0

Release-2.19.0: Update changelog.

Merge pull request #369 from openeuropa/release-2.18.0

Release-2.18.0: Update changelog.

Merge pull request #367 from openeuropa/release-2.17.1

Release-2.17.1: Update changelog.

Merge pull request #361 from openeuropa/release-2.17.0

Release-2.17.0: Update changelog.

Merge pull request #352 from openeuropa/release-2.16.0

Release-2.16.0: Update changelog.

Merge pull request #350 from openeuropa/release-2.15.0

2.15.0: Update changelog.

Merge pull request #345 from openeuropa/release-2.14.1

Release-2.14.1: Update changelog.

Merge pull request #342 from openeuropa/release-2.14.0

Release-2.14.0: Update changelog.

Merge pull request #341 from openeuropa/release-2.13.0

Release-2.13.0: Update changelog.