Merge pull request aws#193 from chanchiem/release-2.4.3

2.4.3 Release commit

Merge pull request aws#146 from chanchiem/master

2.4.2 release commit

Merge pull request aws#140 from chanchiem/master

2.4.1 release commit

Merge pull request aws#135 from chanchiem/release240

2.4.0 release commit

2.3.0 release commit (aws#118)

2.2.0 release commit

Fixed leftover poller threads on CI

minor doc update and CI fixes

release commit for 1.1

GA 1.0 release commit

1.0 release commit