RL 1.68 + RL China support & workshop maps

Successfully parses RL 1.68 replays
Successfully parses Chinese Rocket League replays (Only added property is the QQId)
Supports parsing of most workshop map replays
Implemented slice-by-16 as default over slice-by-8
Proper JSON serialization of PS4Ids instead of byte array
Micro-optimizations for reading vectors

CRC errors now print to stderr instead of stdout

Code has some basic support for reading values using SIMD for speedups (but not compiled in this release binary + experimental)