Update ipdb to 0.13.4

[pyup-bot]

This PR updates ipdb from 0.11 to 0.13.4.

Changelog

0.13.4

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

- Add '-m' option
[mrmino]

0.13.3

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

- Allow runcall, runeval to also use set context value
[meowser]

- Add condition argument to set_trace
[alexandrebarbaruiva]

0.13.2

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

- Remove leftover debug code
[gotcha]

0.13.1

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

- Fix when no configuration file
[gotcha]

0.13.0

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

- Add option to set context via environment variable or configuration file
[alexandrebarbaruiva]

0.12.3

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

- Fix version in usage
[gotcha]

0.12.2

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

- Avoid emitting term-title bytes
[steinnes]

0.12.1

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

- Fix --help 
[native-api]

0.12

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

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

Links

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