Bump version to 3.0.0

Merge branch 'dev' into master

Release 2.2.0

Fix Appveyor release tag detection

Merge branch 'hotfix/2.1.2'

Merge branch 'hotfix/2.1.1.1'

Merge branch 'hotfix/2.1.1'

Updated docs for 2.1, modernized the examples

Update all dependencies for rc1 release

Merge branch 'hotfix/2.0.2'

Change version to 2.1.0-preview1