Single cards now can have a milestone. Set them via the card’s side panel, bulk selection action or drag them into a deck with a milestone
Decks still can be associated with a milestones. This will automatically assign the deck’s milestone to all cards within this deck (and all cards created in or moved into this deck)
Milestone inspector: when clicking on a milestone in the calendar, a milestone inspector will open showing all cards associated with this milestone
added “order by milestone” option as well as expanded search to include milestones
More stuff
(hopefully) improved scrolling behaviour when closing cards, jumping to decks etc.
pin your favourite milestone directly from the header
and more stuff I better not mention here (like bugs, ugh!)