chg: 'hf iclass sim' - use @holiman 's 8 csn instead of the original @carl55 (15), and a new first entry csn, to see if the old one got blacklisted.
ADD: Marshmellows fixes for the LF (demods) commands, (LF SEACH) ADD: Holimans changes with hash1_brute FIXES: minor fixes with some calls to "free" and redundant debug statement and code cleanup. removal of commented code.