v0.9.6

• Fix XMLHttpRequest and Blob setLog method
• Correct XMLHttpRequest implementation which will cause firebase login and realtime database hangs
• Support additional parameter when specifying path to fetch.config, for append response data to existing file instead of replace it #141 .
• Add overload method of fetch.progress and fetch.uploadProgress which can limit the frequency of the progress event.
• Add default frequency limit to fetch.progress and fetch.uploadProgress in native for better performance.