Switch project from lspector/clojush to just clojush.
Updated factorial problem to version we've been using for experiments in papers
factorial-more-test-cases
clojush.ns/use-clojush; examples.tutorial updates.
Version bump.
Fixed ns for tutorial; register-instruction throws for dups; rotating cases for calc.
Version bump.
Merge branch 'master' into age-enhanced-lexicase
Merge branch 'age-enhanced-lexicase' into experiments-plus-age