Headers with multiple `.`'s are not treated as valid methods.

[avivkeller]

Per our RegExp, /^`?(?:\w*(?:(\[[^\]]+\])|(?:\.(\w+)))|(\w+))\([^)]*\)`?$/i, methods like foo.bar.method() are not valid.

[avivkeller]

I also don't love that our RegExp's aren't DRY