[Tagging] [Proposal] Boundary=marker

[henkevdb]

Proposal to change 
https://wiki.openstreetmap.org/wiki/Tag:historic%3Dboundary_stone into 
Boundary=marker and if it is historic, simply add historic=yes and/or 
add marker as value on this wikipage -> 
http://wiki.openstreetmap.org/wiki/Key:boundary

https://wiki.openstreetmap.org/wiki/Talk:Tag:historic%3Dboundary_stone

https://wiki.openstreetmap.org/wiki/Tag%3Aboundary%3Dmarker

https://forum.openstreetmap.org/viewtopic.php?id=59721