Update dev dependencies for new workspaces and schematics#15343

Merged

kyliau merged 3 commits intoangular:masterfrom

alan-agius4:deps-versions

Aug 16, 2019

Commits on Aug 15, 2019

feat(@schematics/angular): update workspace dev dependencies
alan-agius4
committed
fix(@schematics/schematics): move development depedencies to `devDependencies` section
alan-agius4
committed
refactor: add npmignore instead of file in `package.json` to align with blank schematics
alan-agius4
committed