Release checklist

Source release

Update OP_LT_* API versioning in configure.ac.
Check for uncommitted changes to master.
Prepare win32 binaries
- Do this before tagging the release, as it may require changes which should be committed
Tag the release commit with 'git tag -s vN.M'.
- Include release notes in the tag annotation.
Verify 'make distcheck' produces a tarball with the desired name.
Push tag to public repo.
Upload source package 'opusfile-${version}.tar.gz' to website and verify file permissions.
Update checksum files on website.
Update links on https://www.opus-codec.org/downloads/.
Add a copy of the documentation to https://www.opus-codec.org/docs/ and update the links.
- Add doc/latex/refman as docs/opusfile_api-${version}.pdf on opus-codec.org
- Add doc/html as docs/opusfile_api-${version} on opus-codec.org

Releases are commited to https://svn.xiph.org/releases/opus/ which propagates to downloads.xiph.org, and copied manually to https://archive.mozilla.org/pub/opus/

Release notes and package links should be added to the corresponding tag at https://gitlab.xiph.org/xiph/opusfile so they show on the releases page.

Release packages should also be manually attached to the corresponding tag on the github mirror https://github.com/xiph/opusfile/releases

Install cross-i686-w64-mingw32-gcc and associated binutils.
- If you skip this step, libopus will still try to build with the system gcc and then fail to link.
Edit mingw/Makefile to point to the latest versions of libogg. opus, openssl (see https://archive.mozilla.org/pub/opus/, checksums in SHA256SUMS.txt)
run make -C mingw
- Downloads versions of libogg, opus, openssl.
- Compiles them.
- Compiles static opusfile and examples against the built deps.
run make -C mingw package
- Creates an opusfile-${version}-win32.zip binary package.
Merge changes between README.md and the version in the last binary release. E.g. it's good to include versions of the dependencies, release notes, etc.
Copy the archive to a clean system and verify the examples work to make sure you've included all the necessary libraries.
Upload the archive zipfile to websites.
Verify file permissions and that it's available at the expected URL.
Update links on https://www.opus-codec.org/downloads/.