Announcing shaka-packager v2.0.1

[KongQun Yang]

We are pleased to announce the release of shaka-packager v2.0.1!

This release improves multi-period support and handles invalid inputs better (invalid mp4, invalid WebVTT etc). Here are the highlights:

• Improve DASH multi-period support: calculate presentationTimeOffset and Period@duration from video segment presentation timestamps. This avoids video playback jitters due to gaps.
  
• Handle invalid WebVTT with start_time == end_time gracefully (#335).
  
• Ignore invalid meta box in mp4 files, which Android's camera app generates (#319).

Please see the CHANGELOG for a full list of changes.

Enjoy!