api : can (de)compress to/from NULL without UBs
api : fix alignment test on 32-bit systems (state initialization)
api : fix LZ4_saveDictHC() in corner case scenario, detected by @IgorKorkin
-cli : --list command, compressed file content statistics, by Filipe Calasans
+cli : `-l` legacy format is now compatible with `-m` multiple files, by Filipe Calasans
cli : benchmark mode supports dictionary, by @rkoradi
cli : fix --fast with large argument, detected by @picoHz
build: link to user-defined memory functions with LZ4_USER_MEMORY_FUNCTIONS, suggested by Yuriy Levchenko