Use modified utf-8 for encoding and decoding strings

[ch-yx]

nbtlib/nbtlib/tag.py

Line 225 in a6c0cd9

data = value.encode("utf-8")

[ch-yx]

m-utf8 is used by java....

[vberlier]

I won't be able to do anything about it in the coming weeks but I plan to start making releases for nbtlib v2 around september/october, it's going to be on the list of things that will get fixed with the rewrite.