v3.1
French loc added thanks to lexo1000.

v3.0
Updated for Royal Court/Fleur-de-lis. Rebuilt from monthly to new annual fervour modifiers. Heresy overflow mechanic threshold increased to 85. Let me know how it performs.

v2.9a
Threshold for the fervour overflow heresy spawn mechanic raised to 150 counties. 10 year cooldown added on fervour overflow when reforming a faith to prevent instant heresy spawn.

v2.8
Extensive rebalance to promote heresies. Crusade declaration fervour threshold decreased to 50%, and yearn for holy war fervour boost removed: prevents faiths getting stuck at 70% who can, but don't, declare holy wars (i.e. Ashari). Threshold for large faiths spawning heresies increased to 50% up from 40%. New overflow heresy mechanism for large faiths: religious mania above 82.5% fervour can spawn heresies. Size of heresies now scales with faith size.

NOTE:
I've had to include the vanilla "on_action\religion_on_actions.txt" file in this update (as well as "events\heresy_events.txt") to make the heresy tweaks. I don't know of any incompatibility with other mods, but there is greater potential for one now. Let me know if there is an incompatibility with a mod that changes the vanilla "religion_on_actions.txt" or the heresy events and I'll see what I can do.

See also the v1.11 update of Fervour Inversion that adds changes to make Fervour Midpoint Rebalance work better:
Fervour Inversion v1.11: Fervour loss for losing a Crusade or Great Holy War increased to -50. Large faiths will now take double fervour loss for losing kingdom holy wars, -10 instead of -5.

v2.7.1
Chinese localisation added thanks to Juijote.

v2.7
Updated for vanilla v1.4. No changes.

v2.6
Fervour gain while engaged in a Great Holy War slowed down above 60 and capped at 80 to stop faiths rocketing to the moon during long crusades.

v2.5
Updated to v1.3.0
No changes.