Added start_dates to some sections of rail

Added (arbirtrary) start_dates to some sections of road

Added start_dates to some sections of rail

Removed admin_level and boundary=administrative from some start_date-less waterways

Removed Savoy and Orange boundaries from Upper Rhenish Circle after 1797/1713; Roughly removed reclaimed Maasvlakte territory (pre-1960s) and edded water over the Afsluitdijk pre-1932

Removed Lorraine boundaries from Upper Rhenish Circle after 1766; restored broken boundary in Istria; Fixed tagging error in a K. of Sardinia relation (3=2 → admin_level=2)

Removed erroneous enclave from Westphalia after 1810 and added some chronologies

Fixed some relations

Added Province of German Bohemia

removed admin_level from some ways; fixed relation

Fixed some relations

added some names to Trebizond and the Eastern Roman Empire

Deleted "ss" relation (seems to have been created in error or something and doesn't seem to actually be anything meaningful)

Fixed some relations; Added some labels for disputed/self-declared entities

Added Province of German-Tyrol

Added the political districts of Roveredo (Rovereto) and Borgo

Added the political districts of Primiero and Cavalese

Added some exclaves/enclaves on the Austro-German border in Silesia near Pilgersdorf (I'm not sure when these started or ended, but seem to be late-19c/early-20c only)

Added Kreis Brixen and Innsbruck, a few lakes and the uppermost Etsch/Adige

Corrected Venezia Tridentina start_date (San-Germain came into force in 1920)