- l10n: Add zh-CN dist files

- Linting (ESLint): Add back `no-console`; while useful for debugging, could flag incomplete code (and was breaking at reporting of unused directives)
- Docs (CHANGES): Add changes and apply more formal style
- Build: Rebuild with updated Babel/Rollup
- npm: Update devDeps

dist/extensions/ext-locale/polygon/zh-CN.js

@@ -0,0 +1,17 @@
+var svgEditorExtensionLocale_polygon_zh_CN = (function () {
+  'use strict';
+
+  var zhCN = {
+    name: '多边形',
+    buttons: [{
+      title: '多边形工具'
+    }],
+    contextTools: [{
+      title: '边数',
+      label: '边数'
+    }]
+  };
+
+  return zhCN;
+
+}());