some unescape() are missing

[sigmaeo]

There is no unescape in:
readStringArg()
copyStringArg()
compareStringArg()

So you got (with ID=1) from readStringArg() for the transmitted string:

1,Hello\,World\;Or what?;

"Hello\,World\;Or what?"
Of course you can unescape this no in user sketch, but I think, this is not as it should be?

[sigmaeo]

I fixed this in my fork and it is included in poll #37.

Now you got:
"Hello, World; Or what?"