I believe that the following (found in the "Announcements" section of this forum) answers 1 of your questions.
December 2018 Recent Changes
« Reply #1: December 22, 2018, 11:34:19 PM »
Fix unit highlighting in battle
Disabled access to food distribution on stable islands (was never intended to be on stable)
Include duke in recipients when writing 'all nobles of duchy'
Update dynamic map
Mark old hunts as inactive every turn
Send message to realm when property/wealth taxes are updated
Only allow building harbours and shipyards in 'coast' regions; update Beluaterra's 'lake' regions surrounding Lake Salaman to 'coast' regions
Limit alliances/federation chains to one-third of human-held regions on an island
Fix minimap
Temporarily disable Citizen Militia
There may be a more descriptive answer somewhere else, but this is all that I came up with.
