core.py missing module

I had typed up a post about a core.py and an error message, but when I went to edit it saying I had submitted a PR, I accidentally clicked delete. For the record, no warning when that happens, it just deletes.

At any rate, I submitted a PR for core.py as it was missing the inspect module, causing this error when I tried to create a new pin that already existed:

File "/home/plasma/linuxcnc-dev/lib/python/qtvcp/core.py", line 138, in newpin
t = inspect.getframeinfo(inspect.currentframe().f_back)
NameError: name 'inspect' is not defined