Properly handle sequence.play({range}) for range[0] > 0.

Fixes #15

packages/playground/src/audio/index.ts

@@ -0,0 +1,36 @@
+import {getProject} from '@theatre/core'
+import studio from '@theatre/studio'
+
+studio.initialize()
+
+const proj = getProject('Musical project')
+const sheet = proj.sheet('Scene')
+sheet.object('An object', {x: 0})
+
+setTimeout(async () => {
+  // const d = defer()
+  // window.addEventListener('click', () => {
+  //   d.resolve(null)
+  // })
+  // await d.promise
+  await sheet.sequence
+    .attachAudio({
+      source: 'http://localhost:5000/Kai%20Engel%20-%20Moonlight%20Reprise.mp3',
+    })
+    .then(() => {
+      console.log('ready')
+    })
+  sheet.sequence.position = 11
+  await sheet.sequence.play({
+    iterationCount: 4,
+    range: [10, 14],
+    direction: 'normal',
+    rate: 2,
+  })
+  // await sheet.sequence.play({
+  //   iterationCount: 2,
+  //   range: [20, 22],
+  //   direction: 'normal',
+  //   rate: 4,
+  // })
+}, 10)

packages/playground/src/index.tsx

@@ -1 +1 @@
-import './space-exploration'
+import './audio'