fix #2, use low_level_hash isntead of wyhash

fix #1, upstream dependencies now require wyhash

fix recent dependencies for absl

reduce memory usage of benchmark

add dependency required on fedora

move typedef into header

remove unnescessary code

cleanup types, avoid casts

fix example

try to cleanup dependencies

Update README.md

Update README.md

update docs

fix cmake build type

add NDEBUG to get a release build