Null serialisation vs specification

[KeNaCo]

Specification says that 2.0 add Null type.

>>> fastrpc.dumps((None,), useBinary=True, protocolVersionMajor=2, protocolVersionMinor=0)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
RuntimeError: Null is not supported by protocol version lower than 2.1

There is no mention of 2.1 protocol version!

[volca02]

Looking into the repository, the Null type was added in e5ad7f6 and in the same commit the protocolVersionMinor was rised to 1, so this is clearly a mistake in protocol documentation. I'll fix it here in the wiki.