Fixing up opus download location

Updating build script

Adding new auto-release

Beta ffmpeg build with latest from upstream

cherry-pick fix for x265 shared

First test of arm64 build from cvanwink/arm64-2

Merge pull request #2 from descriptinc/sr/shared-macos-10.11

Shared libraries (targeting macOS 10.11)

Update build-ffmpeg

zip it up