Update ipdb to 0.12

[pyup-bot]

This PR updates ipdb from 0.10.3 to 0.12.

Changelog

0.12

-----------------

- Drop support for Python 3.3.x
- Stop deprecation warnings from being raised when IPython >= 5.1 is used.
Support for IPython < 5.1 has been dropped.

0.11

-----------------

- Simplify loading IPython and getting information from it.
Drop support for python 2.6
Drop support for IPython < 5.0.0
[takluyver]

Links

• PyPI: https://pypi.org/project/ipdb
• Changelog: https://pyup.io/changelogs/ipdb/
• Repo: https://github.com/gotcha/ipdb

[coveralls]

Coverage increased (+0.06%) to 30.441% when pulling a39f830 on pyup-update-ipdb-0.10.3-to-0.12 into 8613d9d on master.

[pyup-bot]

Closing this in favor of #313