feat: support for multiline comment for languages that use default regex

Author: idoo

package.json

@@ -38,7 +38,6 @@
     "file-saver": "^2.0.0",
     "http-server": "0.9.0",
     "js2flowchart": "1.3.2",
-    "line-number": "^0.1.0",
     "lodash": "^4.17.10",
     "lodash.debounce": "^4.0.8",
     "madge": "^3.4.4",