Feat: Scoord markers & markups. (#43)

* Add annotation markups for display of measurements (NUM) and qualitative evaluations (TEXT) along with ROIs vector graphics
* Add annotation markers to configure how ROIs are displayed (e.g., POINT rendered as an arrow)
* Add toggle for overview map
* Refactor private utility functions and move them into a separate file

Author: igoroctaviano

README.md

@@ -154,4 +154,8 @@ The developers gratefully acknowledge their reseach support:
 * The [National Center for Image Guided Therapy](http://ncigt.org)
 * The [MGH & BWH Center for Clinical Data Science](https://www.ccds.io/)
 
-
+## Troubleshooting
+### Overview map not responsive: 
+Some interactions could cause side effects on the viewer's instance of OverviewMap since it also uses the same interactions in the map.
+If you enable the 'draw' interaction, the overview map will lost its ability to instantly update
+the map when changed.

babel.config.js

@@ -0,0 +1,3 @@
+module.exports = {
+  presets: [["@babel/preset-env", { targets: { node: "current" } }]],
+};