Bugfixes

v0.8.0 removed the implementation of the null decompressor under the assumption that it was no longer used; it was, however, still used when recompressing an image with null-compressed blocks. The change to remove the implementation was reverted and a new test case was added. Fixes github #193.

Performance

Some more ricepp compression speed improvements. Also, the universal binaries for x86_64 now automatically choose a ricepp version based on CPU capabilities.
For Windows, there's an experimental -ricepp package/binary. This contains a "hybrid" build where the ricepp library was built using clang and everything else using cl. This binary offers significantly faster ricepp compression. Decompression speeds are similar to the regular package/binary. If you don't care about compressing large amounts of FITS files on Windows, just stick to the regular package/binary.