libaom v2.0.1

[Wan-Teh Chang]

The libaom 2.0.1 release has been finalized.

The release is available from the git repository[0] on the Applejack branch
and the automatic v2.0.1 tarball[1].

This release includes two bug fixes.

- Bug fixes:
Issue 2723: Fix crash in chroma_check() when generating a monochrome
encoded stream in real-time mode.

Issue 2833: Fix crash on some input when reduced still picture header is
used in real-time mode and speed >=7.

[0] https://aomedia.googlesource.com/aom/+/refs/tags/v2.0.1
[1] https://storage.googleapis.com/aom-releases/libaom-2.0.1.tar.gz
https://storage.googleapis.com/aom-releases/libaom-2.0.1.tar.gz.asc