Random number generator xoroshiro128+
Range primitives
http://xoroshiro.di.unimi.it/
http://forum.dlang.org/post/kdobdorqztlsomweftmi@forum.dlang.org https://www.reddit.com/r/programming/comments/4gtlfz/xoroshiro128_the_fastest_fullperiod_pseudorandom/
See Implementation
Random number generator xoroshiro128+