- Linting (ESLint): Stricter rules (or switch to warning)

- Breaking internal API change: `updateGripCursor` moved to be class method of Selector rather than instance method
- Breaking internal API change: `subpathIsClosed` moved to be class method of `Path` rather than instance method
- Refactoring: Reuse utilities base64 encoder for SVG icons plugin
- Docs (JSDoc): Fix return of the `mouseUp` (can also be an object) and `mouseDown` (may also be a boolean) of `pathActions`; other JSDoc additions/improvements

editor/touch.js

@@ -1,4 +1,9 @@
 // http://ross.posterous.com/2008/08/19/iphone-touch-events-in-javascript/
+/**
+ *
+ * @param {Event} ev
+ * @returns {undefined}
+ */
 function touchHandler (ev) {
   const {changedTouches} = ev,
     first = changedTouches[0];
@@ -11,7 +16,7 @@ function touchHandler (ev) {
   default: return;
   }
 
-  const {screenX, screenY, clientX, clientY} = first;
+  const {screenX, screenY, clientX, clientY} = first; // eslint-disable-line no-shadow
   const simulatedEvent = new MouseEvent(type, {
     // Event interface
     bubbles: true,