TypeScript conversion

[NaridaL]

WIP

[coveralls]

Coverage decreased (-3.1%) to 89.432% when pulling e7846ef on NaridaL:dev/ts into ecddf42 on mobxjs:master.

[NaridaL]

coveralls drop is due to more lines because of prettier.

I'm going to review this in a couple of days. The I've made some slight breaking changes wrt the "*" feature so I intend to release as a 2.0 version. I will use the opportunity to do make some other necessary changes (e.g. #77 )

[NaridaL]

@danfma This should fix your issue. If you want to check out the branch and test it with your project, that would be very helpful!

[danfma]

Thank you! I will try that, but actually I solved that by transpiling all the serializr code also.