With ver 1.20 Patch representation becomes unnecessary complex when inserting new element into list of lists. Using old implementation it was very simple to determine added element from "value" field.

Example:

import jsonpatch
a = [[1,'a']]
b = [[2,'b'], [1,'a']]
print jsonpatch.make_patch(a, b)

Ver 1.16 prints:

[{"path": "/0", "value": [2, "b"], "op": "add"}]

Ver 1.20 prints:

[{"path": "/0/0", "value": 2, "op": "replace"}, {"path": "/0/1", "value": "b", "op": "replace"}, {"path": "/1", "value": [1, "a"], "op": "add"}]