use union merge driver for NEWS.md
Only use all.equal if identical is FALSE.
Closes #165
Renable random praise. Closes #164
Upgrade roxygen
Move methods to depends. Closes #123
Merge pull request #163 from krlmlr/union-merge

use union merge driver for NEWS.md
Add missing slash. Thanks to @bart1.
Closes #131
Update travis config
Implement auto_test_package with load_all.
 Fix bugs in safe_digest.
Closes #138. Closes #151. Closes #138. Closes #146
New way to create errorred expectations
R CMD check fixes
Remove roxygen from DESCRIPTION