Angular 11 support

• Save package as devDependency

• feat: angular 11 support (#59) 5c27e07

• build(deps): bump https-proxy-agent from 2.2.1 to 2.2.4 (#37) 58f264a

• build(deps): bump handlebars from 4.0.11 to 4.7.6 (#44) 47e09df

• build(deps): bump js-yaml from 3.12.0 to 3.14.0 (#52) 0338d62

• build(deps): bump merge from 1.2.0 to 1.2.1 (#32) 3390fb7

• build(deps): bump npm from 6.4.1 to 6.14.9 (#56) f7b0686

• build(deps): bump mixin-deep from 1.3.1 to 1.3.2 (#30) 540cdf0

• build(deps): bump fstream from 1.0.11 to 1.0.12 (#22) abd1140

v3.1.0...v4.0.0