Release version v0.6.3
Release version v0.6.2
Release version v0.6.1
Release version v0.6.0
Release version v0.5.0
Release version v0.4.2
Release version v0.4.1
Release version v0.4.0
Release version v0.3.9
Bump version from 0.3.7 to 0.3.8