[Talk-us-massachusetts] 2019 Orthophotos are here!

[Greg Troxel]

I have edited the wiki page.  Please have a look.

https://wiki.openstreetmap.org/wiki/MassGIS#Imagery_and_Feature_Services

I would like to remove the 2005/2008 links, and the USGS links, as they
fail to work.

I am proposing "MassGIS 2019" as the canonical name for this.  Unless it
upsets you, please use this as your layer names when adding it and in
changeset source comments.  I know MassGIS calls it USGS, but when
referring to it from not inside MassGIS, I think MassGIS makes more
sense, in particular because USGS suggests a nationwide layer.