adjusting start date of modern waterway & adding historical waterway based on USGS
adding some missing source tags
uploading some pre-TVA Fort Loudon dam area Tennessee River shapes
fixing name & edtf date formats
changing tram railways from railway=narrow_gauge to railway=tram
adding some source info from prior changesets
Trying to get a better picture of the Milwaukee and Mississippi
fixing up a Waukesha chronology
updating some Wisconsin rail history
adding some tags for Milwaukee Road-related lines
flagging some railway-related objects that need start_dates
adding some tags for rail history & breadcrumbs for future research
adding tags as part of railway research
adding a railyard area to test some styling for both Historical and Railway layers