added ability to ignore wrong values in list of identifier
Merge pull request #200 from dovg/ignore-wrong

added ability to ignore wrong values in list of identifier
+ changelog
Any header may break CurlHttpClient
Fix API of HttpHeaderCollection for BC purposes
Merge pull request #208 from DanielPlainview/bugfix-http-headers-collection-api

Fix API of HttpHeaderCollection for BC purposes
Merge branch 'onphp-master' into FormCollection