Added Liptó and Árva counties

Added basic version of the "Between the Danube and Tisza" statistical region (I'm not really sure how they work vs administrative divisions)

Added post-1876 Bihar county; Implemented border change between Heves and Jász-Nagykun-Szolnok (1902 used as transition date as this whas the earliest I could find evidence of the change but it may have happened much earlier)

Roughly added Heves exclave between the Jászkunság and Bekes

Added post-1876 Heves and Jász-Nagykun-Szolnok counties and some missing exclaves of Pest/Heves in the Jászság

Added Zólyom county post-1860 and made amendment to Nógrád

Added pre-1800s Nógrád county

Added pre-1850s Zólyom county

Fixed Ottoman Empire relations either side of 1812; added Greek and Italian names and more specific dates to the United States of the Ionian Islands; fixed label and place for Kingdom of Prussia relations

Minor boundary tweak to non-1850s Esztergom county

Roughly added Szilágy county

Added Hungary (1751-79) and tweaked various other Hungary relations (mostly adding more specific dates and moving labels around); Added labels for Royal and Eastern Hungary

Amended/corrected the Jászság pre-1850 and post-1860

corrected border (Heves és Külső-Szolnok/Bekes)

Minor improvements/tweaks to a section of the Nórgrád-Hont border

Made some Czechoslovak dates more specific and added official names to Czechoslovakia 1948-92

Tweaked some boundaries, mostly pre-1850

Added some earlier versions of Szatmár county (very rough and incomplete)

Added Szatmár county (needs some corrections pre-1850s at least) and 1854-60 Szabolcz county

Improved border