Add SharedArrayBuffer to new ES8 section (#119)

Author: addaleax

globals.json

@@ -2,6 +2,7 @@
 	"builtin": {
 		"Array": false,
 		"ArrayBuffer": false,
+		"Atomics": false,
 		"Boolean": false,
 		"constructor": false,
 		"DataView": false,
@@ -41,6 +42,7 @@
 		"Reflect": false,
 		"RegExp": false,
 		"Set": false,
+		"SharedArrayBuffer": false,
 		"String": false,
 		"Symbol": false,
 		"SyntaxError": false,
@@ -159,6 +161,68 @@
 		"WeakMap": false,
 		"WeakSet": false
 	},
+	"es8": {
+		"Array": false,
+		"ArrayBuffer": false,
+		"Atomics": false,
+		"Boolean": false,
+		"constructor": false,
+		"DataView": false,
+		"Date": false,
+		"decodeURI": false,
+		"decodeURIComponent": false,
+		"encodeURI": false,
+		"encodeURIComponent": false,
+		"Error": false,
+		"escape": false,
+		"eval": false,
+		"EvalError": false,
+		"Float32Array": false,
+		"Float64Array": false,
+		"Function": false,
+		"hasOwnProperty": false,
+		"Infinity": false,
+		"Int16Array": false,
+		"Int32Array": false,
+		"Int8Array": false,
+		"isFinite": false,
+		"isNaN": false,
+		"isPrototypeOf": false,
+		"JSON": false,
+		"Map": false,
+		"Math": false,
+		"NaN": false,
+		"Number": false,
+		"Object": false,
+		"parseFloat": false,
+		"parseInt": false,
+		"Promise": false,
+		"propertyIsEnumerable": false,
+		"Proxy": false,
+		"RangeError": false,
+		"ReferenceError": false,
+		"Reflect": false,
+		"RegExp": false,
+		"Set": false,
+		"SharedArrayBuffer": false,
+		"String": false,
+		"Symbol": false,
+		"SyntaxError": false,
+		"System": false,
+		"toLocaleString": false,
+		"toString": false,
+		"TypeError": false,
+		"Uint16Array": false,
+		"Uint32Array": false,
+		"Uint8Array": false,
+		"Uint8ClampedArray": false,
+		"undefined": false,
+		"unescape": false,
+		"URIError": false,
+		"valueOf": false,
+		"WeakMap": false,
+		"WeakSet": false
+	},
 	"browser": {
 		"addEventListener": false,
 		"alert": false,