Merge branch 'feature/2.4.2'
Merge branch 'feature/2.4.1'
Merge branch 'feature/2.4.0'
Updated CHANGELOG
Merge branch 'release/2.2.2'
Version 2.2.1
Version 2.2.0
Snowplow JavaScript Tracker Core v0.4.0
Version 2.1.2
Version 2.1.1