[Talk-GB] Latest OS Opendata

[Chris Hill]

I've added the Natural England dataset that shows CRoW Access land for 
England. The polygons were extracted from large multipolygons (ten 
covered all of England) so they have no individual metadata, such as a 
name.

I've now called the overlay openover to reflect that it's not just OS 
Greenspace. I intend to add some information to explain what is being 
shown and where it comes from, thanks to a helpful comment from Ed Loach.

See the latest here: https://raggedred.net/openover

-- 
cheers
Chris Hill (chillly)