Auto merge of #5591 - bundler:dwr-metadata, r=segiddins
Auto merge of #5591 - bundler:dwr-metadata, r=segiddins

add metadata to gemspec

Including new changelog link!

(cherry picked from commit 2656fd7c54a81271f0ced674cf78905529728aa9)

mvz/bundler,mvz/bundler,bundler/bundler,dilumnavanjana/bundler,bundler/bundler,dilumnavanjana/bundler