* added new CHANGES
* support for lowercase or mixed case X-Progress-ID header or parameter (fixes IE lowercasing headers)
* report original HTTP error code in probe in case of upload error
* fix crash reported by Michal Drapiewski

This version contains:
 * new timeout to remember connections after they are finished to be able
 to report termination on this connection to upload progress probes

 * handling of HTTP error 413 (request entity too large)

 * First version