old_contents: 
  export default {
    domain: 'http://v3.wufazhuce.com:8000',
    musicDomain: 'http://xiamirun.avosapps.com/run?song=http://www.xiami.com/song/',
    apiPath: '/api',
    imgUrl: 'http://image.wufazhuce.com/',
    apiVersion: 'v4.2.0',
    dev: true,
  };
  
new_contents: 
  export default {
    domain: 'http://v3.wufazhuce.com:8000',
    musicDomain: 'http://xiamirun.avosapps.com/run?song=http://www.xiami.com/song/',
    apiPath: '/api',
    imgUrl: 'http://image.wufazhuce.com/',
    apiVersion: 'v4.2.1',
    dev: true,
  };
  
subject: bump api version to 4.2.1