Added a label to Duchy of Nassau; amended dates of Prussian annexations of Kurhessen, Nassau & Hannover (ratification of the Peace of Prague 1866-09-20); specified exact start_date for Hessen-Nassau; specified some Congress of Vienna start_dates

Corrected segment of the border between Kurhessen and Großherzogtum Hessen and the border between the 1944-45 Provinces of Kurhessen and Nassau (i.e. the northern border of Kreis Schlüchtern). Added Regirungsbezirke Kassel/Cassel & Wiesbaden

Fixed and added some exclaves/enclaves to a few Baden subdivisions

Lowered the admin_level on various Baden subdivisons for compatibility with Baden itself being at level 4 (after 1871). Also fixed some of the relations and added a missing enclave (Deubach mit Sailtheim) to a few Baden subdivisions.

Corrected Hannover 1900s-1921

Added some roads, railways and settlement labels east/north-east of Kassel

Added Wahnhausen to Hannover before 1831 (boundary from later survey map; presumed to be unchanged)

Added missing exclave to Hannover (Polle)

Added small Prussian exclave/Brunswick enclave

Added a few small enclaves/exclaves to various itterations of Prussia

Correction to Prussia 1937-39 (Birkenfeld)

Corrected boundary between Preußen/Prussia, Han(n)over and Brunswick/Braunschweig. Cleaned up boundaries in that area (removed several duplicated segments). Added Free State of Prussia 1937-39.

Split province of Oberhessen at 1918 (seemingly relations can only have one label).

Fixed some relations and added a label to Haddingtonshire

Added Oberhessen subdivision of Großherzogtum Hessen. (Also moved Großherzogtum/Volksstaat Hessen label slightly.)

Corrected parts of the borders between Kurhessen, Großherzogtum Hessen and Frankfurt.

Corrected part of the Hessen-Nassau/Großherzogtum Hessen border.

Corrected part of the Kurhessen/Großherzogtum Hessen border. Similar (but not identical) changes are still required for the post-1866 border.

Corrected Regierungsbezirk Merseburg. Added post-1944 provinces of Halle-Merseburg and Magdeburg, as well as 1944-45 Thuringia. Added some province labels.

Corrected Prussian border with Saxe-Gotha exclave