Update CONTRIBUTING.md, adding @zodern as a collaborator. (#10485)
Update CONTRIBUTING.md, adding @zodern as a collaborator. (#10485)

Adding @zodern as a collaborator with write access (including
triage/review), based on contributions that demonstrate deep understanding
of the meteor/meteor codebase: #9887, #10399, #10452, #10453, #10454

Also updated other parts of CHANGELOG.md to reflect 2019 realities.
Hansoft/meteor,Hansoft/meteor,Hansoft/meteor,Hansoft/meteor,Hansoft/meteor,Hansoft/meteor,Hansoft/meteor