Merge branch 'hotfix/0.4.1'
Merge branch 'release/0.5.0'
Merge branch 'release/0.5.1'
Merge branch 'release/0.6.0'
Merge branch 'release/0.7.0'
Merge branch 'release/0.7.1'
Merge branch 'release/0.7.2'
Update 'Future Directions' in README
Update version # and changelog
Merge branch 'hotfix/0.7.3' into develop