Add .net core support

[robzhu]

Hey Mathieu,
Any plans for adding .net core support? I just ran the coreCLR compatability analysis tool and it indicates the Rethinkdb.dll code is ~97% compatible already. This would also require using a coreCLR compatible version of protobuf-net.

[tetious]

I could be mistaken, but I think the issues surrounding protobuf could be eliminated if we made the coreCLR compatible implementation support only the v0_4 protocol.

[krabishe]

Hi, there is some movement.
Early adoption for CoreCLR in protobuf-net v2.1.0-alpha-1

[John0x]

A .net core compatible version would be awesome!

[JalpeshVadgama]

Now the asp.net core 1.0 RTM is available. Are you planning to make it core clr compatible?

[mfenniak]

I don't currently have any plans to make rethinkdb-net core CLR compatible, but I certainly have no objection to it either. I would very much welcome a community-contributed patch, and I'd be happy to advise, review, and merge that work if anyone interested in taking up this issue. I can see there's a lot of interest.