util.operators: allow variadic math methods to work with arrays
util.operators: allow variadic compare methods to work with arrays
util.operators: don't do deep flatten on arguments ...

... when dealing with variadic operations
util.operators: inspect arguments to determine if ...

... it's array like, instead of using shallow flatten
util.operators: move utility function below point of invocation
util.operators: update documntation
update index.html after documentation change for utils.operators
util.operators: ensure object is not null when checking for array likeness
util.operators: avoid using arguments[0] in variadic functions
util.operators: refactor variadic functions
util.operators: rename function variable - numbersToCompare -> itemsToCompare