- add the "fast compression levels" of zstd via "fast" option (fast=1..64)
- change the 7-Zip property sizes of LZ4, LZ5 and Zstandard to 3
- 3 and 5 byte header are valid now (default is 3)
- update the Methods-Extern.md file, to reflect the property changes
- changed to real Lizard code v1.0 (I used LZ5 v2.0)
- add Lizard file handling, so '.liz' files can be used in windows
- changed CompressDialog (Lizard has 4 entries in the methods now)
- added Lizard icon