v0.8.0

What's Changed

• Add VP8 & VP9 boxes by @gBillal in #19
• Add function to read a sample by metadata by @gBillal in #20
• Add MP4 to Annexb bit stream filter by @gBillal in #21
• Get track by id or type by @gBillal in #22

Full Changelog: v0.7.0...v0.8.0