Allow configuration of default warnTimeout

New method configureLogic({...}) introduced which allows the configuration of the the global defaults like warnTimeout

import { configureLogic } from 'redux-logic';

// globally configure ALL Logic instance defaults instead of overriding these
// properties on each call to `createLogic`. These defaults will not be applied
// to `Logic` instances that have already been created.
//
// specify all or a subset of the following properties:
configureLogic({

  // provide different default values than the package defaults.
  warnTimeout: 10000  // use 0 to disable the warning
});