~kb/wyhash

Simplify output for UInt's
Fix incorrect rand_int output
Fix spelling in comments
Add WIP warning
Update README with latest perf
Add BE safety net
Provide direct output UInt's
Focus perf benchmarks on implemented methods
Direct method for UInt64 outputs
Improve output formatting
Provide perf output for signed ints
Support direct range generation
Format (via crystal tool format)
Update README with benchmarks
Neaten up benchmark tools
Add spec for wyrand output
Fix incorrect license in shard.yml
Remove non mul128 implementation
Improve PRNG, add docs
Next