ECMAScript proposal updates @ 2017-09

The changes of proposal’s status @ 60th meeting of Ecma TC39

Proposal	Stage
Object Shorthand Improvements	NaN -> 0
`Builtins.typeOf()` and `Builtins.is()`	NaN -> 0
`ArrayBuffer.transfer`	NaN -> 0
Extensible numeric literals	0 -> 1
First-Class Protocols(previous name: interface)	0 -> 1
JSON superset	0 -> 1
Nullary coalescing operator	0 -> 1
Partial application	0 -> 1
Array.prototype.flat{Map,ten}	1 -> 2
Throw expressions	1 -> 2
`String#matchAll`	1 -> 2
`import.meta`	2 -> 3
`export * as ns from "mod";` statements	2 -> Spec PR