feature request: FlashPack 3 compression

[pfusik]

ASAP 3.0.0 includes an improved FlashPack for compressing XEX files. The difference from FlashPack 2.1 is that long sequences are no longer RLE, but reuse the previous distance. See asap/6502/fp3depk.asx. See asap/flashpack.ci for how to use 2/3-byte and long sequences for best compression.

This improves the compression by a few percent on average. The new algorithm turns out to be better than Google Snappy for XEX files. I can share some Excel spreadsheets if you like.

[epi]

I saw it in ASAP sources when it was still "experimental", and yes, it will be included in xebin ASAP. :)
Any side artifacts you produced when creating FP3 are very welcome. Thanks!

[epi]

Do you agree to include (likely modified) copies of fp3depk.asx and xasm in xebin under GPL3?

[pfusik]

I withdraw this request.
I plan to replace FP3 compression in ASAP with something probably based on ZX0.