Class Fields to stage 3, per 2017.07.27 TC39

Author: ljharb

README.md

@@ -23,9 +23,9 @@ This list contains only stage 1 proposals and higher that have not yet been with
 |   | [Legacy RegExp features in JavaScript](https://github.com/tc39/proposal-regexp-legacy-features)             | Mark Miller, Claude Pache          | 3 |
 |   | [`Promise.prototype.finally`](https://github.com/tc39/proposal-promise-finally)                             | Jordan Harband                     | 3 |
 |   | [BigInt](https://github.com/tc39/proposal-bigint)                                                           | Daniel Ehrenberg                   | 3 |
+|   | [Class Fields](https://github.com/tc39/proposal-class-fields)                                               | Daniel Ehrenberg, Jeff Morrison    | 3 |
 |   | [`function.sent` metaproperty](https://github.com/allenwb/ESideas/blob/master/Generator%20metaproperty.md)  | Allen Wirfs-Brock                  | 2 |
 |   | [`String.prototype.{trimStart,trimEnd}`](https://github.com/sebmarkbage/ecmascript-string-left-right-trim)  | Sebastian Markbage                 | 2 |
-|   | [Class Fields](https://github.com/tc39/proposal-class-fields)                                               | Daniel Ehrenberg, Jeff Morrison    | 2 |
 |   | [Class and Property Decorators](http://tc39.github.io/proposal-decorators/)                                 | Yehuda Katz and Brian Terlson      | 2 |
 |   | [`Intl.Segmenter`](https://github.com/tc39/proposal-intl-segmenter)                                         | Daniel Ehrenberg                   | 2 |
 |   | [Arbitrary-precision Integers](https://github.com/tc39/proposal-integer)                                    | Daniel Ehrenberg                   | 2 |