Returns true if both arguments are true; false otherwise.
@func @memberOf R @since v0.1.0 @category Logic @sig a -> b -> a | b @param {Any} a @param {Any} b @return {Any} the first argument if it is falsy, otherwise the second argument. @see R.both @example
R.and(true, true); //=> true
R.and(true, false); //=> false
R.and(false, true); //=> false
R.and(false, false); //=> false