Fix timestamps

pico.js

     vnode.dom.scrollIntoView()
 }
 const prettyTime = (ts) => {
-    return ts.slice(11, 19)
+    const dt = new Date(ts)
+    const H = `0${dt.getHours()}`.slice(-2)
+    const M = `0${dt.getMinutes()}`.slice(-2)
+    const S = `0${dt.getSeconds()}`.slice(-2)
+    return `${H}:${M}:${S}`
 }
 const Video = {
     appendStream: ({username, stream}) => ({dom}) => {

pico.py

 
     while True:
         data = await recv_json(ws)
-        ts = datetime.datetime.now().isoformat()
+        ts = datetime.datetime.now().isoformat() + 'Z'
         emit = partial(send_json_many, kind=data['kind'], value=data.get('value'), ts=ts)
         broadcast = partial(emit, targets=sockets)
         reply = partial(emit, targets=[ws])