Merge pull request #130 from google/dev-l

Merge dev-l into dev, now L SDK is released.
Fix typo
Add bitrate to MediaFormat
Suppress deprecation warnings
Add diagnostic info to decoder exceptions + minor cleanup
Add ability to make fine-grained frame release timestamp adjustments
Minor cleanup.
Additional extraction for AC3
Minor linebreak fixes
Merge pull request #138 from google/dev

dev -> dev-hls