gulp-typescript 3.1.1

v3.1.1 - Fix for bundled types

on Node.js Yarn

As of v3.1.0, gulp-typescript uses @types to provide type information for its dependencies. However, those types included the types for NodeJS which caused that these types could be passed to the compiler in an compilation using gulp-typescript, unwanted. @types/node is now registered as a devDependency, so it is not installed any more for users of gulp-typescript.