Updated to 1.13, no changes except vanilla.

Renamed file, so this mod should have highest possible priority = this mod should 99,999% times overwrite other mods in terms of who can be knight and commander.
This most likely would be incompatible with Catholic Trinity, since CT also have custom rules for knights, but i don't like Bishop knights anyway.

If you want to make a compatch for Steam or for yourself open my TXT file and find "is_landed = no" and "has_trait = infirm", copy and integrate into your compatch/personal patch.

Trait "Infirm" now forbids character from leading army.