Added command to update all courses and chapters, downloading videos and checking video size is split into two queues, chapters can be mark to sync individually, updated readme, check if subscription is active, playback rate controll,

resources/views/chapter/index.blade.php

@@ -66,17 +66,17 @@
     <script>
         const value = document.querySelector("#playback")
         const input = document.querySelector("#playback_range")
-        document.querySelector('body').onload = function(){
+        document.querySelector('body').onload = function () {
             const playbackRate = localStorage['playback'] || 1;
             document.querySelector('video').playbackRate = playbackRate;
             document.querySelector('#playback_range').value = playbackRate;
-            value.textContent = 'x'+playbackRate;
+            value.textContent = 'x' + playbackRate;
         };
 
-        value.textContent = 'x'+input.value
+        value.textContent = 'x' + input.value
         input.addEventListener("input", (event) => {
             localStorage['playback'] = event.target.value;
-            value.textContent = 'x'+event.target.value;
+            value.textContent = 'x' + event.target.value;
             document.querySelector('video').playbackRate = event.target.value;
         })
     </script>