function isObject(value) {
			return (
				typeof value === "object" &&
				value !== null &&
				// none of these are collection objects, so we can return false
				!(value instanceof Boolean) &&
				!(value instanceof Date) &&
				!(value instanceof Error) &&
				!(value instanceof Number) &&
				!(value instanceof RegExp) &&
				!(value instanceof String)
			);
		}
Returns `true` when the value is a regular Object and not a specialized Object

This helps speed up deepEqual cyclic checks

The premise is that only Objects are stored in the visited array.
So if this function returns false, we don't have to do the
expensive operation of searching for the value in the the array of already
visited objects

@private
@param  {object}   value The object to examine
@returns {boolean}       `true` when the object is a non-specialised object