Converted interwar Poland and pre-partition Pomeranian Voivodeship over to near-shore ways

Fixed more errors around East Prussia: improved some boundaries

Attempted to clean up various relations in Prussia/Pomerelia; tentatively added East Prussian plebicite areas (currently tagged as "place"); start_end_dates, other tagging; chronologies

Added chronologies for Croatia, Slavoina, Vojvodina, the Military Frontier and Banat; Tagged various relations and ways

Roughly improved a boundary and added missing Međurečje enclave/exclave; Added some missing itterations of Hungary to its chronology; Tagging

Very roughly added boundary for the Serbian Empire; Added relation for the People's Republic of Serbia

Added chronology for Serbia and placeholder relations for the medieval Kingdom and Empire of Serbia; Tweaked Italian Montenegro and added German-occupied Montenegro

Corrected some errors with Albania (and the Italian Colonial Empire) and filled in some tags

Fixed status on Memelland re Lithuania during WWII; Added Lithuania chronology; Added alternative language names for the USSR; Tagging

Renamed "Danube Islands" multipolygon (since that name doesn't really make sense)

Reverted errors introduced in changeset 170169

Fixed an error with Brandenburg post-1938; Tentatively added Brandenburg pre-1881; Added Province of Brandenburg chronology; Added some tags

Tagging and corrections to Bulgaria relations; added labels for Sofia (previous way of representing it does not show up on the map)

Added Bratislava as admin_centre for Slovakia and tagged as a capital city post-1993

Added names for Czechia and Prague in various languages; added Prague as admin_centre for Czechia, Czechoslovakia, Bohemia etc; tagged Prague as a capital city (when appropriate); added several start_/end_events etc

re-added admin_level to Province of German Bohemia (presumed to have been removed by accident – if there is a good reason to not give it one please explain)

Added some rail

Added German versions of some settlements in the Hlučín Region pre-1920 and 1938-45; Added some start_dates; Added a few missing settlements; Added WWII Amtsbezirk Odersch

Removed Hlučín-Region Czech administrative division before 1945 (even if they existed in exactly the same boundaries before then they would have German names etc pre-1920 and 1938-45)

Fixed some boundaries