Update deprecated pandas index diff call

UDST / orca

Python library for task orchestration

https://udst.github.io/orca/

BSD 3-Clause "New" or "Revised" License

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Update deprecated pandas index diff call #18

Closed janowicz closed 7 years ago

janowicz commented 7 years ago

Changing index.diff (deprecated in recent pandas versions) to index.difference, and bumping the minimum pandas version in setup.py to .15.

Travis jobs have indicated this is an issue. This change is analogous to the one made in the following pull request in the urbansim repo: https://github.com/UDST/urbansim/pull/179

coveralls commented 7 years ago

Coverage remained the same at 96.521% when pulling d122ef418883c5bd8aa561715c836f9513289f8e on deprecated-diff into 1f0c11ff0c58db8b90b8be1397e7b34f42824398 on master.