Updated the changelog for the release of 0.8.3

updateing the changelog for 0.8.2

Adding back the zip download option

Updated the changelog

Updated changelog for 0.7.2 release

Updated changelog for 0.7.1 release

Updating the license file location in the dist script

Updated changelog for 0.6.1 release.

Updating the changelog for the 0.6.0 release

Updating the changelog for the 0.5.1 bugfix release.