Encode Contributor object as a json dictionary.
<rdar://problem/70462473>
Created attachment 411816 [details] Patch
Dean and I talked about breaking out the Contributor database so that it belongs to a repository. In order for this to work, we need to be able to fully encode Contributors instead of relying on a global database.
Created attachment 415243 [details] Patch
r=me
Committed r270365: <https://trac.webkit.org/changeset/270365> All reviewed patches have been landed. Closing bug and clearing flags on attachment 415243 [details].