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#### Section/Content To Improve
https://github.com/axios/axios/blob/master/CHANGELOG.md

#### Suggested Improvement
Please add 0.21.1 to the Changelog.

#### Relevant File(s)
https://github.com/axios/axios/blob/master/CHANGELOG.md
dist/axios.js
config.data,
	    config.headers,
	    config.transformRequest
	  );
	
	  
	  config.headers = utils.merge(
	    config.headers.common || {},
	    config.headers[config.method] || {},
	    config.headers
	  );
	
	  utils.forEach(
	    ['delete', 'get', 'head', 'post', 'put', 'patch', 'common'],
	    function cleanHeaderConfig(method) {
	      delete config.headers[method];
	    }
	  );
	
	  var adapter = config.adapter || defaults.adapter;
	
	  return adapter(config).then(function onAdapterResolution(response) {
	    throwIfCancellationRequested(config);
	
	    
	    response.data = transformData(
	      response.data,
	      response.headers,
	      config.transformResponse
	    );