Merge pull request #99 from bxparks/develop

merge 1.6.1 into master

Merge pull request #93 from bxparks/develop

Bump version to 1.6.0; same as 1.5.2

Merge pull request #88 from bxparks/develop

merge 1.5.1 into master

Merge pull request #76 from bxparks/develop

merge v1.5 into master

Merge pull request #72 from bxparks/develop

merge v1.4.1 into master

Merge pull request #65 from bxparks/develop

merge v1.4 into master

Merge pull request #62 from bxparks/develop

merge 1.3 into master

Merge pull request #54 from bxparks/develop

merge 1.2 into master

Merge branch 'develop'

Merge pull request #45 from bxparks/develop

merge v1.0 into master