Scheduled weekly dependency update for week 15

[pyup-bot]

Update defcon from 0.3.5 to 0.5.1.

Changelog

0.5.0

- Added kerning.find() method, to find a value for a pair, even if the pair is not specifically defined in the kerning; i.e., the method is given a glyph name that has kerning, but only because it is in a kerning group.

0.4.0

- When saving a new font created from scratch, or one loaded from a different path, to the location of another existing UFO, the latter is automatically overwritten with the new one (180).
- When saving a font in-place and the existing UFO is invalid, overwrite the latter (165, 180).
- Allow to rename the default layer when saving in-place (165, 180).

Links

• PyPI: https://pypi.org/project/defcon
• Changelog: https://pyup.io/changelogs/defcon/
• Homepage: http://code.typesupply.com

[anthrotype]

FYI, the random Travis CI failures are related to an issue with the new pypi.org switchover:
pypi/warehouse#3702
https://status.python.org/incidents/1y1f44q6srh2
they should disappear once that's fixed

(see, our pyup bot is not useless)

[pyup-bot]

Closing this in favor of #105