$G command not reporting for grblHAL

[jgreilick]

I have found that when connecting to grblHAL firmware, $G from the console does not report the parser state. I have looked through the source code and believe I have found the issue. I have not built and tested, but this is what I found:

from - src/server/controllers/Grblhal/constants.js - Line 48

GCODE_REPORT: '$G\n', should be GCODE_REPORT: '$G', without the newline character. This newline character is inconsistent with similar constants defined here and with the corresponding equality check for $G that occurs in the GrblController (Line 2107).