Fix style lint issues

src/core/Core.js

@@ -125,6 +125,5 @@ export default class Core {
         .then(result => { return result })
         .catch(error => console.error(error))
     })
-
   }
 }

src/plugins/Plugin.js

@@ -47,7 +47,7 @@ export default class Plugin {
     } else {
       this.core.log('plugin is a  target')
 
-      let pluginTargets;
+      let pluginTargets
 
       for (const pluginType in this.core.plugins) {
         const plugins = this.core.plugins[pluginType]

src/plugins/Spinner.js

@@ -18,9 +18,9 @@ export default class Spinner extends Plugin {
 
   setProgress (percentage) {
     if (percentage !== 100) {
-      this.spinnerEl.classList.add('is-spinning');
+      this.spinnerEl.classList.add('is-spinning')
     } else {
-      this.spinnerEl.classList.remove('is-spinning');
+      this.spinnerEl.classList.remove('is-spinning')
     }
   }