Log Message:
lz4: updated to 1.9.1

LZ4 v1.9.1
Changes
fix : decompression functions were reading a few bytes beyond input size
api : fix : lz4frame initializers compatibility with c++
cli : added command --list
build: improved Windows build
build: AIX, by Norman Green

LZ4 v1.9.0
This release brings an assortment of small improvements and bug fixes, as \ 
detailed below :
perf: large decompression speed improvement on x86/x64 (up to +20%)
api : changed : _destSize() compression variants are promoted to stable API
api : new : LZ4_initStream(HC), replacing LZ4_resetStream(HC)
api : changed : LZ4_resetStream(HC) as recommended reset function, for better \ 
performance on small data
cli : support custom block sizes
build: source code can be amalgamated, by Bing Xu
build: added meson build
build: new build macros : LZ4_DISTANCE_MAX, LZ4_FAST_DEC_LOOP
install: MidnightBSD
install: msys2 on Windows 10