Merge branch 'release/0.1.0'
Merge branch 'release/0.1.1'
Merge branch 'release/0.2.0'
Merge branch 'release/0.3.0'
Merge branch 'release/0.3.1'
Merge branch 'release/0.3.2'
Merge branch 'release/0.4.0'
Merge branch 'develop'
updated API documentation