No longer works with InvenTree 0.10.0 API 87

[Gasman2014]

...
delete c  Filter
delete c  Shield
delete c  Transistors
delete c  Load Switches
delete c  N-Channel FET
delete c  NPN
delete c  P-Channel FET
delete c  PNP
None
Traceback (most recent call last):
  File "/Users/johnpateman/Documents/Code/PK2InvenTree/migratePKCategories.py", line 154, in <module>
    for pkpart in allPKparts:
TypeError: 'NoneType' object is not iterable

Trying to migrate my ~600 item PartKeepr database to Inventree but running into a few probs.

[Gasman2014]

Please ignore - operator error with authentication. Working well now - thank you for this.

Three general observations -

1. It would be helpful to have a more verbose terminal output to monitor progress.

2. Shouldn't quit if files are missing. I had a few corrupted image files which render as 404 errors in PartKeepr but which bork the import completely and took some time to weed out by hand to allow the import to continue.

3. No parameters seem to be imported which is a big shame. One of the things I really liked about PK was the Octopart integration and lack of it is one of the reasons I am moving away to InvenTree. Many of my parts have defined parameters but these don't come across. I'm regenerating some of them with Kintree.