Update for v0.5.2

 - update changelog with PRs since last release
 - more supported versions in README
 - package version bump

Tag for release v0.5.1

Tag for v0.5.0 release

Tag for release of v0.4.2

Tag for release v0.4.1

Tag for release v0.4.0

Tag for npm release v0.3.2

Update changelog and bump package version

Tag for release v0.3.0

Tag for release v0.2.1