Fast CRC32 calculation in Ruby

Hi everyone,
in case someone is still calculating CRC32 nowadays(I know, it’s kinda
niche thing), I just wanted to let you know that I wrote a gem which
uses more advanced calculation algorithm(compared to de facto standard:
Zlib implementation):
Nothing major, only one method is available there, but it suits my
needs. So, if someone needs to calculate CRC32 as fast as possible -
maybe my gem will prove useful to you. Of course, if you have some
improvement suggestions, I would welcome them too.