fixed mutability "vars inside contructor and constructor args are private"
fixed mutability "vars inside contructor and constructor args are private"

mwharris333/javascript-koans,mwharris1313/javascript-koans,mwharris1313/javascript-koans,mwharris333/javascript-koans,mwharris1313/javascript-koans,mwharris333/javascript-koans