Playback rate (#411)

* update

packages/artplayer/src/index.js

@@ -202,6 +202,10 @@ export default class Artplayer extends Emitter {
         return this.template.query;
     }
 
+    get video() {
+        return this.template.$video;
+    }
+
     destroy(removeHtml = true) {
         this.events.destroy();
         this.template.destroy(removeHtml);
@@ -241,6 +245,9 @@ Artplayer.FAST_FORWARD_TIME = 1000;
 Artplayer.TOUCH_MOVE_RATIO = 0.5;
 Artplayer.VOLUME_STEP = 0.1;
 Artplayer.SEEK_STEP = 5;
+Artplayer.PLAYBACK_RATE = [0.5, 0.75, 1, 1.25, 1.5, 2];
+Artplayer.ASPECT_RATIO = ['default', '4:3', '16:9'];
+Artplayer.FLIP = ['normal', 'horizontal', 'vertical'];
 
 if (typeof document !== 'undefined') {
     if (!document.getElementById('artplayer-style')) {
@@ -255,7 +262,6 @@ if (typeof window !== 'undefined') {
     window['Artplayer'] = Artplayer;
 }
 
-// eslint-disable-next-line no-console
 console.log(
     `%c ArtPlayer %c ${Artplayer.version} %c https://artplayer.org`,
     'color: #fff; background: #5f5f5f',