Use babel to inline code for properties

[ForbesLindesay]

This inlines the code for css properties, renaming variables as necessary to avoid conflicts.

This reduces the time taken to require('CSSStyleDeclaration') between 80ms and 150ms in my tests. I attribute most of this speedup to the fact that it no longer needs to run the expensive module resolution algorithm for each of the properties.

[cpojer]

This is awesome. To give some context – we use this through jsdom inside of Jest and the require time of this module alone is about 100ms which is about 20 % of jsdom's overall require time. We'd like to speed up Jest's startup time because it is imperative for a unit test framework to run quickly. Please consider merging this :)

[chad3814]

so, that looks great, I'm just concerned that if something goes wrong with it later, I am not smart enough to fix it

[cpojer]

Don't worry, we are always here to help you :)

[chad3814]

published version 0.2.37 with the change. if either of you want to take it over, let me ;)