chaotic prng

It would be nice to have a few chaotic PRNGs, which are highly praised by some practitioners.

E.g --
1. gjrand -- http://gjrand.sourceforge.net/ and
2. jsf -- http://burtleburtle.net/bob/rand/smallprng.html
3. sfc -- https://gist.github.com/imneme/f1f7821f07cf76504a97f6537c818083

Thanks!

Review the linked gjrand, jsf, and sfc references first, then inspect the repository's existing Julia random-number-generator entry points and tests. Define how each generator would fit the project and consider the work complete when the requested generators are integrated consistently and covered by the relevant tests.

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