main
refactor(@angular/cli): update aio links -> adev links
refactor(@angular-devkit/build-angular): move babel build optimizer plugins from @angular/build
perf(@angular/build): replace watchpack with @parcel/watcher and chokidar
refactor(@angular-devkit/build-angular): remove protractor
build: migrate `build_angular` to `ts_project`
build: update all non-major dependencies