Syntax errors and ParentNode.prepend not supported in IE

[alexdaube]

I was testing with release 2.0.0-beta-24 in IE and some errors occurred. Issue 238

Basically putting the babel/env back in the webpack config seem make IE load the lib instead of giving us the awful Syntax Errors message.

Also, ParentNode.prepend is not fully supported by all the browsers, so it's probably better not to use it since it doesn't seem to be needed in this case.

Cheers!

Resolves #238

[RobbieTheWagner]

Hi @alexdaube thanks for letting us know about this, and thanks for the PR! I think the issue was we didn't have a browserslist config, so it was not supporting IE as it should. I just added one. Can you see if that fixes things for you? I think we may not need the webpack config changes, now that we have the browserslistrc.

[alexdaube]

On it @rwwagner90 👍.

[alexdaube]

@rwwagner90 . I guess I didn't look well enough earlier, as the babel-preset config was moved into the babel.config.js. The browserslistrc seem to be resolving the lib loading issue in IE, which is excellent. For header.prepend(title);, the issue is still present.