Removed Mecklenburg/Brandenburg exclaves after 1937

Added the post-WW2 Polish provisional districts; Tweaked some Prussian province relations (mostly more specific dates)

Added post-WW2 Saxony(-Anhalt) and Mecklenburg(-Vorpommern)

Added Anhalt 1863-66 and added labels for several of the other Anhalt prinipalities/duchies; Fixed some Saxony relations

Added Electorate of Saxony(-Wittenburg) (1356-1423); Improved a few boundaries

Added Kurkreis/Wittenburger Kreis; Added Barby/Gommern exclaves to Saxony (pre-1806)

Improved north-eastern border of Anhalt

Added a few Pomeranian duchies

Added Tütz/Tuczno to the Neumark pre-1466; Replaced rough boundary way with pre-existing ways at Tempelburg

Implemented a few 15c. Brandenburg-Mecklenburg boundary changes

Added a bunch of exclaves/enclaves of Cottbus; Added Brandenburg-Küstrin

Added pre-1815 Kingdom of Saxony (and the independent Electorate in 1806); Added Lordship of Cottbus relation and added it as a subarea of Brandenburg/Prussia/post-1807-Saxony

Added post-1810 Departement der Leine; Made Kingdom of Westphalia admin_level 3 and made its departements subareas

Added Landdrostei Hildesheim

Added Regierungsbezirk Hildesheim

Improved small section of border (Hildesheim, Westphalia) around Elze

Improved small section of border (Hildesheim, Westphalia) along the Leine

Improved/corrected small section of the border of Brunswick around Brunkensen

Fixed Mecklenburg-Schwerin border with Hanover (to use correct ways) post-1867

Ccorrected boundaries of Ritzebüttel/Cuxhaven; tweaked and labelled some Kreise