Removed closeAllConnections from tests (fixes #135)

[jameslamb]

This should get CRAN off our backs. If you approve I'll cut a release and push it, but let's keep the PR open until we get accepted.

[austin3dickey]

lgtm

[jameslamb]

I had to add testthat, rmarkdown, and knitr to the build. Think they must have made the default Travis env for R more lightweight.

[jameslamb]

submitted 0.3.1 to CRAN. We should hear back tomorrow

[jameslamb]

oh I know why CRAN failed on my submission! I forgot we moved the test data out to a shared folder. I'll update CONTRIBUTING.md and add a build thing in the Makefile

[jameslamb]

The build failure should be fixed when we merge #138 and rebase this (I'll do that soon). Couple things I had to fix that are unrelated to this and just related to the fact that Travis has changed under our feet in the last couple months

[jameslamb]

@austin3dickey I updated cran-comments.md and also updated the pkgdown site (seemed like the right thing to do for a release commit)

[codecov-io]

Codecov Report

Merging #136 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #136   +/-   ##
=======================================
  Coverage   95.23%   95.23%           
=======================================
  Files           8        8           
  Lines         608      608           
=======================================
  Hits          579      579           
  Misses         29       29

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[austin3dickey]

looks great!