Update redux-saga to version 0.15.1 🚀

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Hello lovely humans,

redux-saga just published its new version 0.15.1.

State	Update 🚀
Dependency	redux-saga
New version	0.15.1
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 redux-saga.
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 126 commits .

• df9d184 0.15.1
• 1da517d Do not use Symbol internally, because 2 conflicting redux-saga versions wont match - i.e. effects created by old one wont be recognized by newer runtime (fixes #950)
• 73bbf40 Wrap join/cancel effects with all
• e14ae6f Some misc grammar fixes
• b44b03a Update ForkModel.md
• e8b49cb Activated loose mode for es2015 preset
• 0d16912 Revamped docs
• f29fdc5 0.15.0
• c6f00c7 Removed middleware options.onerror support, inlined development checks so they can be removed by uglify
• 432e6d7 Merge pull request #740 from aikoven/update-typings
• e40786f Merge branch 'run-saga-refactor'
• 2dcfc9f Merge branch 'all-effect'
• 7078c20 Introducing all effect - explicit parallel effect (against implicit arrays of effects). This also allows to create labeled all effect like the race one
• 6ae3bf6 Merge branch 'call-string-methods'
• 3f20151 Added support for passing names of methods in string for call etc when passing context, i.e call([context, 'method'])

There are 126 commits in total. See the full diff.