Merge pull request #179 from ropensci/dev

Merge pull request #176 from ropensci/hotfix

Update allcontributors on README.Rmd

Merge pull request #157 from ropensci/dev

Merge pull request #145 from ropensci/dev

v0.7.2

Merge pull request #140 from ropensci/dev

v0.7.1

Merge pull request #138 from ropensci/dev

Dev

Merge dev test changes

Final readiness

Update docs and metadata