[skip] Removed branch comparison from Releases (4m)
[fix] Removed styles that broke layout of callouts on small devices (8m)
[refactor] Replaced `.shaded-chart` with `.callout` and used the style for new releases (1h)
[skip] Removed Antecedents section from New Release form (1m)
[skip] Made the Changes editor for New Releases responsive (10m)
[improvement] Asked developers to check tickets being released rather than to remove tickets _not_ being released (30m)
[improvement] Allowed the developer to skip resolving tickets on a release (20m)
[skip] Tweaked styles on New Release form (2m)
[skip] Deleted unused route (1m)
[improvement] Allowed Sprint tasks to be manually completed (20m)
[improvement] Resized burndown charts to fill the window (10m)
[improvement] Updated Roadmaps: allowed locking milestones  and sorting tickets; improved styling and fixed dashboard (3h)