This update was released early on accident due to a bug. As a result, many issues that were not ironed out yet may be present, and not all of the changes below may have actually been implemented. (This was rectified in 2.1.1)
If you downloaded the mod manually, you must re-download it to apply this update.

Additions
-Added the following new mercenary companies: Kutama, Jutlandic Freischar, Geharnischte, Landsknechts, Saharan Company, Bolghar Mercenaries, Polabian Warriors, Pruthenian Company, Moldavian Raiders, Muscovite Company, Russian Kholops
-Added the following new National Idea sets: Asti, Bobbio, Luxueil, Chalons, Mâcon, Malaspina (dynasty group), Marchigian (area group), Old Saxon
-Added the following alternative country names: Buchsgau (Solothurn), Charolais (Chalons)
-Added Fatimid Calamity disaster with 13 associated events
-Added new mission tree for Austria with 58 missions
-Added new shared mission tree for Brunswick/Old Saxony with 33 missions
-Added new mission tree for Naples with 32 missions (contribution by FrenchKnight)
-Added new mission tree for Pisa with 31 missions (contribution by FrenchKnight)
-Added new mission tree for Athens with 28 missions
-Added new mission tree for Trebizond with 25 missions (contribution by Tmasher)
-Added new shared mission tree for Berg/Cleves/Julich with 18 missions (contribution by RetrogMGXII)
-Added new mission tree for Assyria with 17 missions (contribution by RetrogMGXII)
-Overhauled and extended Sicily's mission tree
-Added 118 new Centers of Trade to the map
-Added 4 new government reforms; 2 for Germanic Monarchy, 2 for Italian Communes
-Added 2 new estate privileges; 1 for Mamluks, 1 for Holy Orders
-Added reskinned vanilla Chinese Faction events for the Kievan Rus
-Added event for the Yaroslavichi Triumvirate
-Added triggered province modifier for the Slavic sanctuary of Rethra
-Added Mamluk rebel type
-Added generic decisions for the new religions
-More German localization additions

Changes
-Pope now has a much higher chance to recognize Trinacria's independence post-Vespers
-All Byzantine culture group nations can now restore the Byzantine Empire
-Romansch culture now uses new male/female and dynasty names instead of Italian ones
-Changed Saint Gallen's flag
-Changed a Thorn NI
-Extensive history changes mainly in Silesia and Switzerland
-Changed Prudnik's province name to Osoblaha
-Kemetism can now be revived by owning certain Egyptian provinces
-Gnostic zealots will forceconvert countries if Gnosticism is dominant
-Assyria is now formable by Nestorian and Mandaean nations. Doing so will no longer make you Yazidi.
-Changed the following trade goods modifiers: Barley, Rye, Hemp, Vegetables, Whales
-Soldiers Household, Impressment Office and State House now combo with many VN trade goods as well
-Venezia is no longer barred from spawning institutions
-Various mission modifier tweaks

Balance
-Goods produced per development reduced by 1/4
-Land forcelimit per development reduced by 1/5
-Extra tax, manpower and sailor modifiers from cores reduced by 1/3
-Trade power increase from Centers of Trade reduced by 1/5 for all levels
-Adjusted some CoT levels for certain provinces
-Tweaked some development values
-Sicilian Vespers rebel spawns toned down slightly
-Byzantium now starts with only 10% crown land (instead of 50%) before the 4th Crusade. The Statutory Rights are disabled for them.
-Increased required nations per tier for Defender of the Faith, doubled its cost and made AI less likely to select it
-Nerfed many prestige and tradition ideas for consistency
-Upped cost of Temples/Courthouses/Workshops to 150 ducats so they are no longer free upgrades (also fixes minor interface bug due to spending no money)
-Marketplaces, Barracks, Docks and Shipyards now cost 150 ducats up from 100

Fixes
-Small fixes for the following mission trees: Sweden, Navarra, Serbia, Swabia, Bohemia, Sicily, Venice, Denmark, Normandy, Portugal, France, Scotland, Baghdad, Holland/Netherlands, Seljuk, Prussia, Savoy, Lithuania, Byzantium, Luxembourg, Sardinia, Spain, Epirus, Novgorod, Tuscany, Commonwealth
-Fixed major decision bug where heretic AI PU juniors could flip their overlord's ruler and heir religions and nuke their stability
-Fixed the Support Independence agenda targeting French Fiefs thereby making it impossible
-Build a House of Worship agenda now appears for Monuments too
-Fixed the Build University agenda not checking for universities until tech 60 (the building unlocks at tech 52)
-The Understaffed Electoral College is now properly working and localized
-Various fixes to the Mediatization incident; released princes now spawn with units
-Fragmentation of Poland should no longer restart after firing once
-Forming Sicily as Apulia will no longer switch your mission tree
-Fixed the Kurland formation decision requiring wrong provinces
-Fixed the tech requirement for forming Arabia
-Commonwealth can no longer form Lithuania
-Improved localization for crusade events
-Fixed wrong West Slavic DPN for Bärwalde
-Fixed some area/country names
-Removed the spy teleporter in the Nile Delta
-Removed the Canal du Midi from the river map
-Fixed the Guadalquivir and Kura Estuary modifiers being in the wrong provinces
-Other minor localization/bug fixes

Save games should still work, but it is recommended to restart.
If you downloaded the mod manually, you must re-download it to apply this update.

-Small fixes for the following mission trees: Venice, Palatinate, Novgorod, Luxembourg, Baghdad, Seljuks
-Fixed a major bug preventing the Emperor from demanding unlawful territory with Emperor DLC
-Allowed Free Cities to form and join trade leagues again
-Halved the regiments per development for all mercenary companies to make them less massive
-Improved the Plague event chain more to give more options and allow a player to lower the spread chances with Hospices
-Balanced development values in Egypt
-Fixed unit spawns in the Fall of Arpads disaster
-Fixed oversight that made ending Fragmentation of Poland unfairly difficult
-Made the decision to reform Poland slightly easier
-Extended Salzburg's mission tree (contribution by FrenchKnight)
-Tuscany can no longer collapse if they are a subject
-Italian Communes now get units on spawning
-Tribes reforming off of Byzantium are no longer Empires
-Properly fixed the Baltic orders having no techs as it was still bugged
-Fixed Piedmont's formation decision
-Austria is now formable for all Austrian culture countries by owning Wien, Graz, Klagenfurt, Linz and Innsbruck. Take that, von Habsburg!
-Fixed a bunch of flavor events giving absurd amounts of Piety
-Breagha and Leacain's English names now properly show
-Fixed some history around Anabaptism in the timeline
-Added Papal Factions and associated events
-Greatly increased chance of Tribes to get random claim events
-Added event to de-appanage states that should not be appanages
-Translated some mission titles to German
-Other small localization fixes
-Other minor bugfixes

Save games should still work, but it is recommended to restart.
If you downloaded the mod manually, you must re-download it to apply this update.

-Added the following alternative country names: Sarir (Avaria), Ronsberg (Burgau), Antwerp (Breda), Eppan (Eschenlohe), Rott (Wasserburg), Novosil (Odoyev)
-Small fixes for the following mission trees: Castile/Leon, Aragon, England, Scotland/Alba, Sicily, Holland/Netherlands, Karling, Novgorod, Venice
-Fixed several issues with the Plague event chain and made it easier to understand
-Added some more goto effects in events
-Added an event option to contribute money and troops for a crusade
-Fixed rare bug where getting a Rota ruler while at war with the Grand Prince caused you to haemorrhage land
-Fixed rare bug causing the Lombard League to disband prematurely
-Slightly buffed the Baltic orders and invasion countries
-Teutonic and Livonian Order no longer start with no techs
-European nations no longer get the estate agenda to obtain tea provinces
-Changed a province name in Iberia, added a couple more DPNs there
-Fixed Wloclawek misspelling
-Fixed misplaced holy orders interface
-Some events will now spawn republican rebels instead of noble or revolutionary rebels
-Reworked Saint Gallen's NI set (contribution by primi)
-Fixed the swap to England decision causing Normandy to get English missions
-Fixed several issues with Sicilian Vespers and added an event to automatically win the succession war if you have enough warscore
-Fixed several issues with the Elevation of Bohemia incident
-Several events that split off countries now give truces to stop instant DOWing; also made these tags spawn with units
-Fixed some NIs giving no bonuses when you are not a republic
-Changed France's government modifiers
-Modified starting estate land share in some nations
-Fixed a few provinces starting with Castles rather than Keeps
-Changed Cospaia's province name to Santo Sepolcro
-History fixes regarding the French Lowlands and Papal States
-Fixed a bugged agenda
-Positions.txt fixes
-Other small modifier/localization fixes

Save games should still work, but it is recommended to restart.
If you downloaded the mod manually, you must re-download it to apply this update.

-Small fixes for the following mission trees: Provence, England, Holland/Netherlands
-Allowed Venice to recruit Marines through their mission tree
-Fixed a major bug changing primary culture to no_culture upon Germanization
-Forming Brandenburg now properly gives you their missions
-Made potential for Sicilian Vespers easier
-Fixed Luxembourg's Golden Bull event
-Made the Emperor lose the opinion malus with the Pope if the Investiture Controversy is ended
-European nations no longer get the estate agenda to obtain silk provinces
-Altered the flags and added dynamic names for several Turkish Beyliks
-Fixed Germanic Monarchies being able to get heirs outside their election event
-Added dynamic names for Rumelia, Cossackia, Ventimiglia, Ingolstadt, and Piedmont
-Fixed Eupen and Malmedy history, now under Prussian control after 1815
-Various fixes to Piedmontese history under the Savoyards
-Emperor is now heavily weighted to join every Crusade
-Fixed a bugged river
-Other small localization and event fixes

Save games should still work, but it is recommended to restart.
If you downloaded the mod manually, you must re-download it to apply this update.

-Small fixes for the following mission trees: Luxembourg, Baghdad, Ifriqiya, Seljuk, Franche-Comte, Switzerland, Karling, Holland, Novgorod, Foix, Kiev, Latin Empire, Cologne, AEngland, Portugal
-Fixed several mission modifiers
-Fixed a few mission tooltips
-Fixed the Bavarian NI set being duplicated
-Samogitian Ideas now apply to all Samogitian primary culture tags
-Added dynamic names for Latium
-Added dynamic name for Poland (Duchy of Warsaw)
-Fixed Gotland naming issue
-European nations no longer get the estate agenda to obtain spice provinces
-Buffed Fragmentation of Poland rebels
-Changed modifiers of several trade goods bonuses
-Added a decision to unite the Kievan Rus unlocked when the last reform is passed
-Added event for English-French rivalry and made them historical rivals after the HYW begins
-Small history changes mainly in Pomerania
-Corrected a few Wallachian tag names and flags
-Other small localization fixes

Save games should still work, but it is recommended to restart.
If you downloaded the mod manually, you must re-download it to apply this update.

-Small fixes for the following mission trees: Alania, Barcelona, Breton REL, Brandenburg, Karlings, Kiev, Volga Bulgaria, Luxembourg, Qahira
-Overhauled Nitra's mission tree structure and improved several missions
-Some missions that only display effects after fulfilling triggers now show an extra tooltip
-Fixed 1054 startup screen text not showing for tags in Carpathia superregion
-Fixed non-working localization in some mission modifiers
-Fixed a bunch of advisor icons not showing correctly
-Changed early Saxony's country name to Altsachsen
-Changed early Celje's country name to Savinja
-Fixed Roger II of Sicily's incorrect regnal number
-Fixed Temples being given by several events before tech 36
-Significantly lowered attrition at sea to make it less unfairly punishing
-Improved mountain visuals in Carpathia
-Fixed position bug that prevented Sweden from moving its starting ships
-Other small localization fixes

Due to the sheer magnitude of changes from previous versions this will be far from a complete changelog, but rather a brief summary of the major changes in this expansion:

-Complete overhaul and expansion of the map with several thousand new provinces, and dozens of new tags
-Innumerable history tweaks
-Several new cultures and religions
-More fleshed out bookmarks
-Many more new decisions
-Several new trade goods
-Completely redone development values for 1054 (dev for more dates forthcoming)
-Reworked trade node map - more nodes across the board
-Area and region map completely reworked
-New Crusade mechanic
-New Ostsiedlung mechanic (partly tied to Crusades)
-New Norman Invasion of Ireland event chain
-New Plague event chain
-Many more events affecting prices of trade goods
-More Women in History events
-More events for different religions, governments etc.
-Dozens more new flavour events and event chains
-Major balance and quality of life changes across the board
-Reworked Kingdom of the Franks into Kievan Rus
-8 new disasters
-Several new unique government reforms
-9 new Imperial Incidents (Emperor)
-Reworked HRE reform order
-New estates such as the Mamluks
-Over 80 new unique mission trees for tags across the map
-Over 75 new National Idea sets
-Several new mercenary companies
-Hundreds more Dynamic Province Names
-3 new buildings (early versions of tax, government and production)
-9 new loading screens
-More Colonial Regions
-Various GFX tweaks and additions