6001.0001.0000-dev-fb-harmony
Treat &... sequences that are not entities as regular text.

Fixes facebook/react#1667 on parser level.
Support parsing async functions and await expressions
6001.1001.0000-dev-harmony-fb
Fixed issue 554. Code is not mine, but from https://github.com/termi/es6-transpiler/blob/master/lib/esprima_harmony.js#L3390-L3394
Fixed merged upstream PR 216