Fleshed out the README, mention that Arm64 builds are available.

Author: LTLA

.github/workflows/build-libraries.yaml

@@ -67,5 +67,5 @@ jobs:
       - name: Publish release
         uses: softprops/action-gh-release@v1
         with:
-          name: "HDF5 binaries (1.12.2)"
+          name: "HDF5 binaries (x86_64)"
           files: dump/*/*

README.md

@@ -5,12 +5,17 @@ This attempts to match the build process used by [`cibuildwheel`](https://github
 
 - For `manylinux_x86_64`, we create a Docker image based on `quay.io/pypa/manylinux2014_x86_64`. 
   These have HDF5 and friends installed in a standard location and should directly work with `find_package()`.
-  This should be used with the `CIBW_MANYLINUX_X86_64_IMAGE` option.
+  [One of the versioned images](https://github.com/ArtifactDB/prebuilt-hdf5/pkgs/container/prebuilt-hdf5%2Fmanylinux_x86_64) 
+  should be used with the `CIBW_MANYLINUX_X86_64_IMAGE` option.
 - For `musllinux_x86_64`, we create a Docker image based on `quay.io/pypa/musllinux_1_1_x86_64`.
   These have HDF5 and friends installed in a standard location and should directly work with `find_package()`.
-  This should be used with the `CIBW_MUSLLINUX_X86_64_IMAGE` option.
+  [One of the versioned images](https://github.com/ArtifactDB/prebuilt-hdf5/pkgs/container/prebuilt-hdf5%2Fmusllinux_x86_64) 
+  should be used with the `CIBW_MUSLLINUX_X86_64_IMAGE` option.
 - For `macosx_x86_64`, we build binaries using the `macosx-11` runner.
   The resulting tarball should be unpacked to the `installed` directory, which can then be set to `CMAKE_INSTALL_PREFIX` for `find_package()`.
+- For `macosx_arm64`, we build binaries manually on an M2 with MacOSX 13 that I have lying around.
+  (Not ideal, but until GitHub offers an M1/2 runner, it's the best I can do.)
+  The resulting tarball should be unpacked to the `installed` directory, which can then be set to `CMAKE_INSTALL_PREFIX` for `find_package()`.
 - For `windows_x86_64`, we build binaries using the `windows-2019` runner.
   The resulting tarball should be unpacked to the `installed` directory, which can then be set to `CMAKE_INSTALL_PREFIX` for `find_package()`.
-  Note that MSVC builds should define the [`H5_BUILT_AS_DYNAMIC_LIB` macro](https://www.hdfgroup.org/downloads/hdf5/).
+  Note that MSVC builds should also define the [`H5_BUILT_AS_DYNAMIC_LIB` macro](https://www.hdfgroup.org/downloads/hdf5/).