Update v1.5.1:

Balance Changes
Donkeys and Horses will usually now spend 3 game years as adults and 1 as old (before it was 2/2). This will bring up their reproduction rate to the same level as cattle.

AI Changes
Domestic animals escape from raiders when not sheltered, even before being attacked.
People will now build structures even if very hungry when there is no food available, this can easily happen in Nomad mode.

Quality of Life
"No space in stables" warning is now only shown in Autumn or Winter.

Modding fixes
When two scenarios use the same string ID, the game will now display a very obvious warning at startup.
Fixed crash when spawning items for humans in scenarios and there is no space to put them.

General Fixes
Iron Sword now uppercase like the rest of the tool names.
Improved appearance of "Requires Tech" tooltip for context actions.
Fixed issue of animals/humans using the wrong idle animation when switching model (this is triggered by switching Age or outfit).
Fixed issue that could cause 2 trees to grow in the same place sometimes.