Added xxHash, a very fast non-cryptographic hash algorithm, to the crypto extension.
Changed the SHA2 implementation.
All extensions are now built with the -O3 optimization level.
⚠️ Renamed build artifacts:
sqlean-linux-x86.zip→sqlean-linux-x64.zipsqlean-macos-x86.zip→sqlean-macos-x64.zip
⚠️ Dropped support for 32-bit Windows.