metomi/rose#110: reduce reporting of duplicate errors
metomi/rose#278: add rose config-dump prettyprinting
Merge pull request #931 from benfitzpatrick/110.duplicate-checker-metadata

#110: reduce reporting of duplicate errors
Merge pull request #932 from benfitzpatrick/278.config-prettyprint

#278: rose config-dump prettyprinting
Update CHANGES.md