Address() creation with non-byte host argument

[noway]

When Address is being created with an argument which is not an instance of bytes, pyenet will through and error.

Because of the following:
https://github.com/aresch/pyenet/blob/master/enet.pyx#L226

bytes() only takes in 1 argument.

Also, there's no way to specify host as None with this bytes() conversion...

[noway]

Note: this happens only in Python 2, because in python 2 bytes() function is just an alias for str type cast.

I suggest doing something like the following:

if not isinstance(host, bytes):
    host = host.encode('cp437') 

For python2 it would give you:

• on str: will skip without any exceptions
• on unicode: will encode

For python3 it would give you

• on bytes: will skip
• on str: will encode

Note that cp437 is extended ASCII - the charset which covers every 256 value out of a byte. While ASCII might be only covering 127 values and give errors on upper ranges AFAIK