isBoolean (value) {
    return toStr(value) === BOOL_TAG
  }
Return whether the provided value is a boolean.

@example
import { utils } from 'js-data';
const a = true;
const b = { foo: "bar" };
console.log(utils.isBoolean(a)); // true
console.log(utils.isBoolean(b)); // false

@method utils.isBoolean
@param {*} value The value to test.
@returns {boolean} Whether the provided value is a boolean.
@since 3.0.0