Unnumerable changes. To briefly cover some:


-Added Horde tech group and government back, plus new Tribal tech group
-Reworked tribal governments; Tribes now use CoP reform/confederation mechanics and Hereditary Tribe is a direct upgrade
-Removed the Huguenot and Zwinglianist religions, subsuming them all back under Reformed
-Added Finnic paganism and the Catholique religion, representing adherents to the Avignon Papacy
-Gave Paulicianism unique Icons for those with Third Rome; Lollard now has alignments unique from Waldensian
-Remastered the Deity GFX for Baltic and Finnic to not look like garbage
-Rebalanced many of the Deity bonuses to be more consistent and less OP
-Overhauled Reform Desire. It now starts with Popular Theology in the early 1400s and follows the normal track
-Anabaptism is no longer spread from a wave of CoRs but from special events for Anabaptist revolts
-Bosanska has returned to its original name Bogomilist and now exists from the 1054 start
-The six early heresy waves have been turned into DHEs rather than RD-based events, linked to various things
-Added an event chain for the Babylonian Captivity of the Papacy and the 1378 Schism
-Added associated history changes, E.G. Savoy starts in 1444 following antipope Felix
-History overhaul to the Lowlands post-1477, making it much more historically accurate rather than just falling directly to Austria and Spain
-Total history overhaul to the pre-1204 starts; the HRE now starts in 1054 with over 100 more princes than previously
-Eastern Monarchy now shifted into a totally unique government for Byzantium. Hungary and Poland no longer start with it, as they have been historically split into more vassalships and decentralized unions
-Filled in all non-mountain wastelands, IE in Anatolia and Russia, adding over 50 new provinces, a new trade node, new superregion, etc.
-Two new Beyliks, Tavas and Ladik, exist, plus about a dozen Russian principalities, and dozens more new Baltic tribal tags
-Lithuania, no longer existing from the start, is now formable
-Brandenburg is finally formable
-It is now impossible to fabricate claims on Primitives, one must crusade them, use a mission, another CB, etc.
-Overhauled the ruler/government history of most tribal nations in Frisia, Wendland, Baltic, etc.
-Added two new Irish tags, Dublin and Cork, plus a new province
-Tweaked history of the Isles again, Mann starts as independent.
-Added several new Norman Italian tags for the other Norman baronies
-Switched the County of Sicily to use the Trinacria tag before 1130
-Removed prelimary Saxony/Swabia/Tuscany collapse events from the last update
-Overhauled history of HRE electors; it now always remains at 7 rather than wildly vacillating
-Pfalzgraviate starts as an elector rather than Worms(gau), and never becomes a Nondynastic Monarchy
-Fixed several dynasties, e.g. von Tyrol -> von Tirol and de Bouillon -> d'Ardenne
-Split several more jure-uxoris unions, e.g. Bar in 1054
-RD now has a special system where it is properly balanced by the amount of Catholic tags in the world
-Added many flavor events to the new governments - Italian Commune events, Byzantine Monarchy events, Swiss Canton events, etc.
-Added flavor events for the piracy idea group
-Added DHEs for England to become an English Monarchy, the Papacy to leave the HRE, etc.
-Finally added the event for the rise of the Anatolian Beyliks around 1300
-Added six new Ni sets: Lucca, Florence, Orange, Ventimiglia, Loon, and Piombino
-Added events for Turkish factions finally, plus rebalances and influence gain changes
-Changed Ottoman Gov to a general Turkish gov, and gave it to all Beyliks
-Added a set of three factions for Abbacy governments, plus associated events (Benedictines, Cluniacs, Cistercians)
-Gave Sweden and Russia proper modifiers for their offscreen land rather than shoehorned NIs, plus Rum gained the same.
-Fixed various minor UI bugs, like the Exploit Dev tab being missing, the Consecrate Metropolitan/Pasha bars being totally messed up, State menus of foreign countries looking weird, etc.
-Upped the final Reformation CoR count to 8 max, plus made them stronger
-Made England more likely to go Anglican
-Added several new missions, e.g. mission for Apulia to conquer Sicily, mission for Hungary to conquer Styria in 1200s, etc.
-Fixed Sicily not using Sizilien NIs while the Hohenstaufens rule it
-Removed the 'Enforce Fief' restriction from most CBs as apparently it made it so you can't promise land
-Changed Sicily's starting war in 1248 to be a Coalition War so they can't take land
-Rebalanced some Age abilities, nerfed England's 25% Morale and Brandenburg's 15% all power cost
-Added sanity check to Age of Reformation so it can't fire before 1490
-Removed the strait between Corsica and Sardinia
-Added several Ibadi provinces in inland Africa at the early start date
-Removed several unnecessary Bookmarks
-Shuffled around Religion GFX quite a bit due to the removal of Huguenot
-Overhauled Islamic tag flags, including formulaic flags for all Taifas and Qadits
-Slight changes to flags of the Commonwealth and Trinacria to be more consistent
-Improved Culture names/surnames further, mostly in the Baltic
-Added several Bulgarian tags and tweaked Bulgarian history, including adding the Lovech pseudo-state that survived past 1444, and a dedicated tag for the crusader duchy of Philippopolis
-Fixed the 'conquer Albania' mission being available even when Durazzo exists
-Fixed later start dates like 1444 having insanely high Army Professionalism
-Hundreds of minor history fixes, along the lines of giving someone a proper birth-year or removing a duplicate ruler

-Added ruler cultures for all the Teutonic and Livonian order
-Added some ruler cultures in Bremen, Verden, and Turin
-Removed duplicate dynasty in cultures.txt
-Changed spelling of certain LIV/TEU dynasties

-Added 100 Frankish dynamic province names
-Added 2 Leonese dpns
-Added more Swiss, Romansch, Portugese, Roman, and Occitain dpns
-Restricted Communes from becoming Free Cities
-Fixed error where Greek Achaea was called 'Duchy' instead of 'Despotate'
-Nerfed Welsh Marcher interest idea to -0.5
-Updated surnames in /common/countries/ for Francia, Lombardy, Englelone, and Byzantium/Nikaia
-Overhauled names and surnames in the same for all Prussian states, Zamgali, and Yotvingia
-Completely overhauled cultures.txt; added and fixed tons of dynasties and first names in it. All individual cultures have totally unique dynasties now (applies to Custom Nations and event-generated rulers)
-Fixed Colonial Charters event to only apply to actual colonizers
-Changed the Knights' Maltese event to make it their accepted culture rather than primary culture
-Tons of changes to /history/:

>Switched several instances where a consort was a suo-jure ruler to be mere 'royal marriages' with the consort ruling her own state. E.G. Franche-Comte and Swabia; Turin and Savoy (Turin is now playable in 1054)
>Fixed historical mistake - Zahringens now properly rule Breisgau and Baden in 1054
>Habsburgs, Rheinfeldens, and Frohburgs all playable in the Aargau from 1054
>Made Solothurn switch to Canton in 1481 (minor)
>Cleaned up history in Deasmhumhain quite a bit, added birthdates and fixed mistake's in Paradox's parts
>added heirs and tweaked rule dates on several nations in 1248 (to minimize immediate succession wars)
>fixed dynasty mistakes in Nevers, and oversight where Mathilde de Bourbon existed twice in two different states
>added several Appanages for better balance and history - Landgraviate of Alsace is now always independent
>fixed oversight where from 1125-27 Transjurania was leaderless, it's now properly under Franche-Comte
>changed Monaco (prov and tag) to Nicard culture, changed names to French style
>Andechs duke's sister rules Franche-Comte independently right from the 1248 start
>added Schweinfurt as a playable county in 1054
>numerous dynasty naming convention changes: Salian are now Salier, the '-inger' states are now '-ing', Meinhardiner are now also Meinharding, starting rulers of Nordgau are properly Rapotonen, Cuman Terters now Terteroba, etc.
>added two new wars: the First Swabian Civil War where Stauferstadt is trying to claim Swabia from Rheinfelden's son (Staufers now only capture Swabia in 1090 when he dies); Second Swabian Civil War where Zahringers are trying to claim Swabia from Staufers
>added Lordship of Aosta as a vassal under Savoy from 1090 when they annex Turin to 1295
>added several ruler cultures in different theocracies, made the Swabian dukes of Spoleto culturally Swabian, Svarno of Lithuania now culturally a Ruthenian Orthodox
>Finally fixed the nonsensical naming convention of the House of Barcelona; it starts as 'de Barcelona' until they actually inherit Aragon and become 'd'Aragó'
>Changed names of pretty much all Prussian leaders to better reflect Old Prussian conventions

-Fixed error where the Hanseatic City removal decision would only remove one city
-Vertus has proper capital
-Alencon ruler and province histories now filled properly
-Anglo-Burgundian occupation of Champagne now matches war participants
-Tweaked French-Navarran union in 1284; NAV and CHP remain independent until 1314
-Tweaked war participants due to the above, including the Sicilian Vespers
-Gave later Manx rulers English personal culture
-Cleaned up later rulers of Urbino; Florence now properly PUs them in 1516
-Changed date at which Monaco becomes principality
-Added Lucrezia Borgia as a consort in Ferrara
-Fixed Toggenburg keeping a dead ruler, now properly under Glarus PU
-Changed name of Mede to Rozzano
-Added NIs for Monaco, Montferrat, Ferrara, Urbino, and Siena
-Changed adjective for Angouleme
-Added Poitevin, Occitain, and Roman dynamic names for Angouleme
-Added Roman and Breton dynamic names for Caux
-Added Anglo-Saxon dynamic name for Rouen
-Fixed bug where certain fiefs would be glitched when released out of French land
-Fixed bug where Great Britain and Scotland could endlessly form each other
-Knights now become Maltese culture if the ‘cede Malta’ event fires
-Aragon will not be eligible for ‘Conquer Sicily’ decision due to Knights owning Malta
-Tweaked city positions for Milan and Rozzano
-Fixed typo in the description of Tin

Bugfixes:
-cleaned up the whole Errors.log of various typos and oversights
-vast majority were in country histories, breaking some or all of certain countries' rulers
-some more serious ones broke entire events, e.g. important Ottoman flavor
-fixed some nonexistent triggers, improperly named trade goods, etc
-fixed some event modifiers to be up to date with 1.24

Other:
-increased maluses of refusing the Leon split event
-tweaked religion and culture of the Duchy of Syrmia
-made the Principality of Krk playable 1451-1481
-added the new 1.23 Books modifier to Leipzig post 1710
-tweaked NIs for a few nations with glitched or clunky bonuses

-Fixed bug where Turkish raid and Manzikert events could fire in much later starts
-Fixed bug where new Muslim 'Enforce Religion' decision didn't do anything
-Fixed typo in the start screen text for post-1800 starts
-Fixed missing trigger for the Death of Savonarola event
-Tweaked Leon-Castile border during the 1065-1070 split
-Tweaked participants in the Franco-Flemish war, fixed Flanders still being a fief
-Tweaked participants in the First Scottish Independence War to be more balanced
-Tweaked bonuses from certain trade province modifiers, and province placement
-Moved historical Guelph-Ghibelline event start flag back to 1122 (Concordat of Worms)
-Added National Ideas for Styria, Augsburg, Bamberg, Oldenburg, Magdeburg, Rothenburg, Bayreuth, Feadha, Mide, Tir Chonnail, South German Confederation, and North German Confederation (courtesy of contributors)
-Added new Hanseatic City province trade modifier
-Added decision to revoke Hanseatic rights
-Added decision to reform from Eastern Monarchy at a steep cost
-Added decision for France to sieze Templar lands and lose the estate
-Added some failsafes to the early Reformations, ensuring they won't all fire too rapidly
-Tweaked likelihood and defined ruler for the Ernestine Duchies event
-Added events for the rise of Hanseatic provinces after Guilds are unlocked
-Added event for the division of Leon in 1065
-Added events for the overthrow of Italian bishoprics into Communes
-Added event to enable the Guelph-Ghibelline events if you start before 1122
-Added preliminary event for the collapses of old Frankish feuds - Tuscany, Swabia, and Saxony

-Fixed a major bug where the Norman Conquest events couldn’t happen
-Tweaked the religious history of Grodno to be more consistent
-Fixed history inconsistencies between Erik in Denmark and Erik in Gotland
-Made it so France still gets permanent claims to France even if one doesn’t have MoH
-Made it so France switches to Feudal Monarchy if you launch without MoH
-Basic fix to all the Start Screen info, removing false statements and adding new info
-Attempted to finally fix the reformation waves:
-Jury-rigged proper RD values for variant start dates, e.g. start in 1172 and it will be at 90% already
-RD events give variable RD based on how many countries are in the world
-Early heresy wave MTTH dropped from 5000 to 500, balanced for low TAG count in regions
-Lutheran and Calvinist have wider reach and faster conversion than all other CoR heresies

Hotfixed an error where people with Cradle of Civilization would CTD on the Military tab, maybe.

It would be impossible to give an actual changelog for this update; in essence the entire mod was restarted from scratch. From now on logs will be kept however.