Bump version to v0.7.0 (aws#214)

Prepare to release v0.6.4 (aws#197)

Release v0.6.3 (aws#190)

release v0.6.2 (aws#161)

Release v0.6.1 (aws#122)

bump release version to 0.6.0 (aws#112)

release v0.5.1 (aws#105)

Release 0.5.0 (aws#101)

* Update README and Examples for v0.5.0

* Release v0.5.0

Release v0.4.1 (aws#88)

* update README for readiness check

* optimize imports

* release v0.4.1

release v0.4.0 (aws#76)