Fixed some relations

Added Tarvisio and Cervignano to Veneto from 1923 and Gorizia 1923-27; Implemented Veneto boundary changes with Venezia Tridentina

Corrected boundaries of Piedmont and Liguria with France pre-1940s; added labels for Trentino-Alto Adige/Südtirol

Amended Oldenburg-Hanover boundary (changed at some point in or before 1944, probably 1930s at the earliest)

Corrected error in Oldenburg boundary

Fixed several relations

Added 1830-1810 Oldenburg and implemented 1774 elevation to Duchy

Fixed some relations

Roughly improved small part of the Hanover-Brunswick boundary; Fixed several relatinos

Added Comtat Venaissin relation and label

Added labels to Hungarian circles

Fixed some Italian relations

Added Menton and Roquebrune to Monaco pre-1861 and removed from Sardinia until 1849

Corrected end_date for Kingdom of Sardinia (1734-...) relation (Savoy and Nice were lost in 1796, other mainland posessions de facto lost 1798/1800); fixed a few other Kingdom of Sardinia relations

Fixed Pyrmont relations

Added Napoleonic-era labels for Bavaria

Fixed some relations

Fixed some Austria-Hungary/Austrian Empire relations

Corrected some erroneous left-bank territories left to Hesse-Darmstadt after 1797 and Birkenfeld erroneously added to Lübeck

Corrected pre-1792/1814 boundaries of Sardinia/Savoy around Geneva