1.0.4

Version 1.0.4:

• New speed-optimized LZSA1 and LZSA2 decompressors for 8088 and 8086 by Jim Leonard
• Improvements to size-optimized versions of LZSA1/LZSA2 for 8088 by Peter Ferrie
• Size and speed improvements to LZSA1/LZSA2 decompressors for 6502 by Peter Ferrie

1.0.3

Version 1.0.3:

• Increase compression ratio further for LZSA2
• Allow incompressible data in raw blocks
• Delete output file if an error occurs
• Fix 8088 decompressor to only use 8088 opcodes (issue #3)

1.0.2

Version 1.0.2:

• Increase LZSA1 and LZSA2 compression ratio for some types of files

1.0.1

Version 1.0.1:

• Small improvement to the LZSA2 compression ratio
• Add 32-bit windows binary

1.0.0

Version 1.0.0:

• Final LZSA1 format
• Updated, faster LZSA1 decompressors
• New and final LZSA2 format with higher compression, and associated decompressors. Ratio on par with ZX7 with much higher decompression speed
• Compression and decompression benchmarks (-cbench and -dbench command line options)
• Self-tests (-test command line option)

0.5.6

Version 0.5.6:

• Implement support for dictionaries
• When using the -m option, decompress ~7% faster by trading ~0.5% in compression ratio

0.5.5

Version 0.5.5:

• Reduce token count by 1% without changing the compression ratio

0.5.4

Version 0.5.4:

• Update and freeze 'lzsa1' compressed format. The byte encoding is now final and will not change anymore.
• Improve format to simplify and speed up the decompression code while keeping the same ratio.
• Minor command-line fixes.

0.5.3

Version 0.5.3:

• Add -m option to set the minum match length
• Add --prefer-speed, --prefer-ratio options to favor the compression ratio (default) or decompression speed, which are equivalent to -m3 and -m4 (decompression speed equals LZ4 on Z80 when using --prefer-speed, with a better ratio)
• Compress 5% faster
• Add size-optimized variant of the Z80 decompressor (contributed by spke)
• Add strict block size checks when decompressing with the command-line tool

0.5.2

Version 0.5.2:

• Add LZSA decompression code for 6502
• Fix small flaw in optimizer to gain a small amount of extra compression, and decompression speed