Update typescript to version 2.1.4 🚀

[greenkeeperio-bot]

Hello lovely humans,

typescript just published its new version 2.1.4.

State	Update 🚀
Dependency	typescript
New version	2.1.4
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 typescript.
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.

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The new version differs by 2317 commits (ahead by 2317, behind by 80).

• 409311f Update LKG
• e15166a Merge pull request #12670 from Microsoft/mergeMaster1205
• ae3b6e7 Merge branch 'master' into release-2.1
• 5c71de1 Merge pull request #12652 from Microsoft/fixIndexedAccessWithAny
• ee172cf Accept new baselines
• 95aed3f Add regression test
• c52eb6c Indexed access any[K] has type any
• b7e8a6d Merge pull request #12643 from Microsoft/keyofUnionIntersection
• 23992ba Merge pull request #12640 from Microsoft/mappedTypesSecondaryInferences
• 3aa05b2 Accept new baselines
• b4836e3 Add tests
• b876211 Property handle union/intersection types in type variable checks
• f61a224 Merge pull request #12639 from MattiasBuelens/fixElideFallthrough
• 970c4aa Accept new baselines
• 773c9a7 Add tests

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

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This pull request was created by greenkeeper.io.

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[kamranayub]

Will need this bad boy to move to TS 2.1

[kamranayub]

FYI I've created a branch on my fork where I will attempt to update TS to 2.1.4, but if someone beats me to it feel free to add to this PR. I do not intend to add any new features, just see if it works with a 2.0 and 2.1 project.

[Prior99]

Any updates on this?

[kamranayub]

I have TypeDoc compiling as a project, but there are other issues I'm guessing with the TS internal stuff I will need to work through. I have zero knowledge of the TSC so, you know, time to learn.

[kamranayub]

It's mostly working except there was a change in TSC that causes const declarations to return a different type flag(s) so I'm trying to figure out how to get that working.

[kamranayub]

I added a new PR, #365