Update Categories.yml to include ambitious Summit 2019 milestones
From 1-1 discussion with @markpundsack, we should update categories.yml minimal, complete, loveable dates to hit some ambitious targets for 2019 summit in May.
This will serve to focus the teams on high priority, obtainable accomplishments for the start of 2019.
May Summit Milestones
- 25% (6 of 22) of "New in 2019" Categories moved to Minimal - www-gitlab-com!16956 (merged)
- 50% (11 of 22) of "New in 2018" Categories moved to Complete - www-gitlab-com!16961 (merged)
- 6 Reference customers using all stages
Edited by Kenny Johnston