Support for Open Location Code

[karussell]

We should not only support GPS coordinates but also open location code from Google. Standing under Apache License. See here for a good comparison where open location code stands out from its logical point of view and being pure algorithmic based as well as the code license.

We need to clarify

• license, clear answer at Patent or licensing of the code google/open-location-code#48
• elevation support? No, there is no elevation/level support, Support for elevation or a building level planned? google/open-location-code#47

An alternative would be https://github.com/roberdam/Xaddress

[karussell]

We won't support this

[mmd-osm]

Apologies for hijacking this issue a bit. Maybe you've seen the discussion to implement OLC on osm.org which has attracted a lot of attention in recent years: openstreetmap/openstreetmap-website#1807.

As you seem to have spent some time analyzing OLC in more detail and eventually decided against it, your reasoning might be helpful for the discussion on osm.org as well.

[karussell]

I prefer OLC over all other existing "codes". But IMO the client can&should decode OLC and use coordinates for all API related stuff.