- 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/extensions/ext-overview_window.js

@@ -16,7 +16,7 @@ export default {
     // https://code.google.com/p/chromium/issues/detail?id=565120.
     if (isChrome()) {
       const verIndex = navigator.userAgent.indexOf('Chrome/') + 7;
-      const chromeVersion = parseInt(navigator.userAgent.substring(verIndex), 10);
+      const chromeVersion = parseInt(navigator.userAgent.substring(verIndex));
       if (chromeVersion < 49) {
         return;
       }