- Add Gulp and new dependencies to `package.json`
- Add `gulpfile.js` with four tasks:
- `tsc`: For building TypeScript sources
- `bundle`: For bundling JavaScript modules in a monolith
- `sorcery`: For resolving the source map chains back to the original TypeScript files
- `build` (`default`): Runs the whole `tsc` → `bundle` → `sorcery` chain
- Clean up `Dockerfile`, since `cpio` is not needed any more
- Clean up not needed dependencies from `package.json`
- Remove `bin/build`
- Update `bin/release` to use `npm run build` instead of `./bin/build`
