Add a part of the pre-1998 railway south of Frogner
Update start_date based on historic images
Update start_date based on historic images
Update start_date based on historic images
Extend Hovedbanen to Brynsbakken
Extend Hovedbanen past Kløfta and add some missing switches to Gardermobanen
Add more railway north of Lillestrøm
Add start_date to railway lines
Add Nyland - Sagdalen stations to hovedbanen
Extend Hovedbanen from Lørenskog to Nyland
Add more of Hovedbanen, roughly Lørenskog - Fjellhamar
Add building for Vestbanestasjonen
Add some buildings with know start dates
Add source tags for Jotunheimen glacier segments
Add source tags for Gråfjellsbrea segments
Trace Nigardsbreen from 1964/2004/2010/2013/2019 images