Neocoin support

[beluca]

Hello,

is it possible to add the support of neocoin (it's pos+pow coin) : https://github.com/neocoin-project/neocoin ?

For now if I try to run stratum with neocoin it fail on submitblock.

  resp = (yield self._call('submitblock', [block_hex,]))

It return 500.

I have set correctly CENTRAL_WALLET = my_pub_key I am on the pos branch