New feature: The game now warns you that you're about to spend actions in such a way that you will no longer have enough to sustain your spells. This can be toggled off in Settings.
New art: Sea Serpent (Head), Sea Serpent (Spine) and Sea Serpent (Tail).
Modding
Modding: BarbarianFeatsDb.EnterRage and BarbarianFeatsDb.DoesRageApplyToAction are now public.
Modding: Feat.FlavorText is now settable.
Modding: Many places that previously used .Humanize() or .ToString() are now using .HumanizeTitleCase2() which means they'll display human-readable names of modded feat names and modded traits instead of a string like '41001'.