TTN V3

[bsimmo]

We're looking to migrate out TTN gateways to v3 as and when needed, so we need to look at using V3 in our code.
This looks to still be at v2. What's the status, if any, on planned TTN v3 compatibility.
If it's none, that's fine, just nice to know.

[ladyada]

this is a dup of
#37
?
we'd love to have the community or TTN help with V3 implementation!

[bsimmo]

Ah, that is just titled downlink not v3.

Hope someone that knows how to can fix it :-)