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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
* ```
	 * Date: Wed, 27 Aug 2014 08:58:49 GMT
	 * Content-Type: application/json
	 * Connection: keep-alive
	 * Transfer-Encoding: chunked
	 * ```
	 *
	 * @param {String} headers Headers needing to be parsed
	 * @returns {Object} Headers parsed into an object
	 */
	module.exports = function parseHeaders(headers) {
	  var parsed = {};
	  var key;
	  var val;
	  var i;
	
	  if (!headers) { return parsed; }
	
	  utils.forEach(headers.split('\n'), function parser(line) {
	    i = line.indexOf(':');
	    key = utils.trim(line.substr(0, i)).toLowerCase();
	    val = utils.trim(line.substr(i + 1));
	
	    if (key) {
	      if (parsed[key] && ignoreDuplicateOf.indexOf(key) >= 0) {
	        return;
	      }
	      if (key === 'set-cookie') {
	        parsed[key] = (parsed[key] ? parsed[key] : []).concat([val]);
	      } else {