Fixed :stack-types for genome_uniform_string_mutation.
Fixed :stack-types for genome_uniform_string_mutation.

thelmuth/Clojush,saulshanabrook/Clojush,lspector/Clojush,NicMcPhee/Clojush,saulshanabrook/Clojush,NicMcPhee/Clojush,thelmuth/Clojush,lspector/Clojush,Vaguery/Clojush,Vaguery/Clojush