Update raven to 6.10.0

[pyup-bot]

This PR updates raven from 6.9.0 to 6.10.0.

Changelog

6.10.0

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* [Core] Fixed stackframes in some situations being in inverse order.
* [Flask] Fix wrong exception handling logic (accidentally relied on Flask internals).
* [Core] No longer send NaN local vars as non-standard JSON.

Links

• PyPI: https://pypi.org/project/raven
• Changelog: https://pyup.io/changelogs/raven/
• Repo: https://github.com/getsentry/raven-python

[coveralls]

Pull Request Test Coverage Report for Build 440

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 44.62%

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Totals
Change from base Build 425:	0.0%
Covered Lines:	311
Relevant Lines:	697

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💛 - Coveralls

[coveralls]

Pull Request Test Coverage Report for Build 440

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 44.62%

---

Totals
Change from base Build 425:	0.0%
Covered Lines:	311
Relevant Lines:	697

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💛 - Coveralls