OpenShot 3.0 released

One of the largest and most noticeable changes to OpenShot 3.0 is our improved video preview, resulting in smoother video preview and fewer freezes and pauses during previewing. But to understand why things are so much smoother, we need to look deeper into our decoding engine. We have rearchitected our decoder to be much more resilient to missing packets, missing timestamps, and better understanding when we are missing video or audio data, so we can move on without pausing.