Fixed a bug where Occitanic cultures weren't flipping back to French/Iberian as they should.
Improved Occitan names in Poitou Berry.

- Additional bugfixes related to Occitanism and to the Shuadit tag.

- Small bugfixes related to crash issue. WIP.

- Additional province names in the New World.
- Bugfixes, both miscellaneous and province history-related. Still working to resolve issue mentioned in the bug reports.

Province names in Limousin and Auvergnat.

Removed accents from most occurences of "è" in the Aquitan culture, to better reflect the spelling of the Limousin dialect.

Small code performance tweak.

Added:
- Aquitain/Aquitan culture (Limousin+restored northwestern). "Occitan" culture renamed to Languedocien/Lengadocian.
- Early draft of Haute-Viennois family names for Limoges, Limousin, and La Marche.
- Releasable Valentinois country, in preparation for the earlier startdates.
- Prepatory work for Jewish advisors, including a dummy 'Shuadit' tag to generate them from. Still not fully implemented as I've been unable to finish testing the events.
- Groundwork for future features and updates.

Tweaked:
- Halved the maluses to religious and cultural conversion in Occitan Ideas, as they made completing the missions too difficult.
- Improved the accuracy of Montpellier's namelists. They now use the local "dau" instead of wider Languedoc's "del".
- "Unite Occitania Diplomatically" now required 37 tags to be owned by Occitan-cultured tags, similar to the Territorial unification which requires 37 provs be owned or vassals of the player.
- Additional tweak to the unification decisions to disallow insta-absorbing others' subjects upon country formation.
- In order to complete the unification, added a diplomatic option (available to Occitania, Occitania, and the Catalan countries) to offer integration to countries of the right culture. This will, however, greatly damage your relations with their former overlords...
- Various tweaks, fixes, and improvements to Occitanism in collaboration with Julien, the Trobador's Revenge author.

Patched:
- Bug where the Legacy of Eleanor mission moved slots after loading a savegame, similar to an earlier bug on a different tree.

Added:
- La Marche tag.
- Saintonge tag.
- Additional historical depth for the future 1291 scenario; some tweaks to event chances based on test runs.
Amended:
- Credits. An author wanted to be cited by their other name.
- Poitevin and Saintongeais namelists. Further names added; added 'common' names to the tags who were missing them.
- Lowered AI likelihood to join the HRE.
Patched:
- Occitanism Spreading event fired based on Occitan tags opinion of others, instead of the inverse. Legacy bug from TR.
- The army buildup mission gave everyone permaclaims on Poitou.
- Catharism events were triggering for everybody, and were also missing localization. Oops.
- Certain revolt_triggers were missing. These have been added, and Occitania no longer tries to revolt to the Knights tag.

Per Julien's editing and tests, tweaked the Occitan Liberation CB to avoid getting the CB unusably on a bunch of random countries.