Minimize Flo - factor out some inlined styles

Generate flo.css

CM extension to be added on the client side

Switch to joint.core

Update joint.core switch script

Try post-install

Proper postinstall stage

Remove support for joint.core switch

package.json

@@ -87,6 +87,9 @@
     "karma-jasmine": "1.1.0",
     "karma-jasmine-html-reporter": "0.2.2",
     "lite-server": "2.4.0",
+    "ng-packagr": "^5.3.0",
+    "scss-bundle": "^2.5.1",
+    "node-sass": "^4.12.0",
     "ngx-bootstrap": "4.2.0",
     "rimraf": "2.6.1",
     "rollup": "1.14.2",