Bump version to 0.4.6
Bump copyright
Clean up backtraces so failed assertions don't point to r-t-rest
Add assert_status_code helper; clean up json assertion
Drop pp requirement
Tweak err message format
Merge remote-tracking branch 'origin/master' into feature/clean_backtraces

Conflicts:
	VERSION
	rack-test-rest.gemspec
Merge pull request #10 from josephruscio/feature/clean_backtraces

Feature/clean backtraces