The g-code command parser did not allow three characters to be passed
as parameters to commands (asterisk, semicolon, pound sign). Rework
the parsing code to better leverage the python shlex package so that
these characters can be supported.
In particular, this should allow better support for printing g-code
files that have unusual characters in the filename.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
d45b9c92d8