Merge pull request #465 from humanpred/release-0.12.1 Prepare to release 0.12.1

Merge pull request #410 from billdenney/v0.12.0 Prepare for v0.12.0 release

Merge pull request #271 from billdenney/v0.11.0 Prepare for release of version 0.11.0

Merge pull request #220 from billdenney/release-prep Prepare for CRAN submission

CRAN release of version 0.10.0 

On CRAN 

Ignore extraneous CRAN files 

Fix vignette issues 

Version 0.8.4 as submitted to CRAN 

Version 0.8.2 intended for CRAN release