1	02:57	arrow function
2	02:58	the let keyword
3	02:16	default values for function parameters
4	02:14	const declarations in es6 es2015
5	01:01	shorthand properties in es6
6	02:12	object enhancements in es6
7	01:40	using the es6 spread operator
8	04:12	string templates
9	04:33	destructuring assignment
10	05:33	es6 modules es2015 import and export
11	02:19	converting an array like object into an array with array from
12	05:51	promises with es6
13	05:28	generators
14	05:14	maps and weakmaps with es6
15	01:40	js es6 parameter object destructuring with required values