Update opbeat to version 4.13.0 🚀

[greenkeeperio-bot]

Hello lovely humans,

opbeat just published its new version 4.13.0.

State	Update 🚀
Dependency	opbeat
New version	4.13.0
Type	dependency

This version is not covered by your current version range.

Without accepting this pull request your project will work just like it did before. There might be a bunch of new features, fixes and perf improvements that the maintainers worked on for you though.

I recommend you look into these changes and try to get onto the latest version of opbeat.
Given that you have a decent test suite, a passing build is a strong indicator that you can take advantage of these changes by merging the proposed change into your project. Otherwise this branch is a great starting point for you to work on the update.

Do you have any ideas how I could improve these pull requests? Did I report anything you think isn’t right?
Are you unsure about how things are supposed to work?

There is a collection of frequently asked questions and while I’m just a bot, there is a group of people who are happy to teach me new things. Let them know.

Good luck with your project ✨

You rock!

🌴

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The new version differs by 405 commits .

• 06877d7 4.13.0
• fe4e90c chore: bump stackman dependency
• 26a441c test: improve source map test coverage
• bedd76d core: add source map support
• 8fc34b7 core: fix culprit detection
• e2aaf5d chore: code cleanup
• ddeb402 test: inhance the chance of Travis-CI tests passing
• 2efec7e chore: fix isseus/pr links in CHANGELOG.md
• 18ca03a 4.12.0
• 52959a8 core: change default trace.type to 'custom'
• 0e04f4d core: default trace.name to 'unnamed'
• ea2942b core: rename trace.signature to trace.name
• 90b6332 core: add flushInterval config option
• 72102ee core: don't accept result as argument to startTransaction
• 889f48d core: default transaction result to 200

There are 250 commits in total. See the full diff.

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