Update dependencies, make TypeScript a peer dependency

[JackCuthbert]

In order to get things moving and learn my way around being a new maintainer, I'm updating the dependencies to bring us back to the present and solve an issue that's been bugging me personally 🚀

Includes changes:

• Update all the things to their latest versions
• ts-jest at version 24 supplies a preset for Jest 24s new preset option, documentation
• Updated the testRegex configuration to only pay attention to *.ts files for tests, it was running both js and ts files before.
• Made typescript >= 2.2.2 a peer dependency which should close out Typescript needs to be a peer dependency #112 and make the plugin a little more flexible for folks on newer versions

The builds only fail on node 9 as a newer package depends on LTS releases only, should we update the travis pipelines to test only LTS as well? Especially considering GCP and AWS support only LTS releases AFAIK.

[divyenduz]

@JackCuthbert : Is there an alternative to this new package that works for more node versions? Node 9 is recent enough and people might want to use that. Let us see if we can support that :)

[JackCuthbert]

Is there an alternative to this new package that works for more node versions? Node 9 is recent enough and people might want to use that. Let us see if we can support that :)

@divyenduz, it looks like the package requiring an LTS node (sane@4.x) is required by Jest 24 (via jest-haste-map) which is not used in the plugin itself. To resolve this we'd have to use Jest < 24.

I'd personally prefer to keep things up to date and add node 10 to the list of tests replacing node 9. What do you think?

[divyenduz]

Sounds great, let us circle back on this if people want node 9 support, merging this one for now.

[divyenduz]

🎉 This PR is included in version 1.1.6 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot 📦🚀