StackStorm/st2 — pull request #918 by Kami (2014-12-18 16:02:18+00:00)
Title: Update gitpython dependency to the newest version to avoid AttributeError exception

Encounter this bug in production yesterday when testing the Twitter sensor.

```
| | "twitter": "Success." |
| | }, |
| | "exit_code": 0, |
| | "stderr": "Exception AttributeError: "'NoneType' object |
| | has no attribute 'debug'" in > ignored |
| | ", |
| | "stdout": "" |
| | }

| | "result": { |
| | "twitter": "Success." |
| | }, |
| | "exit_code": 0, |
| | "stderr": "Exception AttributeError: "'NoneType' object |
| | has no attribute 'debug'" in > ignored |
| | ", |
| | "stdout": ""
```

The issue seems to be caused by a bug in gitpython dependency which has been fixed in a new version - https://github.com/msiemens/PyGitUp/issues/18