Merge pull request #144 from bcbio/devel

use repositories now

Merge pull request #141 from bcbio/devel

bump to 0.4.4

Merge pull request #134 from bcbio/devel

fix bump

Merge pull request #109 from bcbio/devel

prep for release 0.4.2

Merge pull request #52 from bcbio/devel

downgrade to warning minor version

Merge pull request #42 from bcbio/devel

Upgrade to usethis functions