* Fixing the constants in Util is defined in a PHP version that is less than 5.6.
## v2.0.2
* The problem of content-type cannot be specified when restoring multipart uploads
## v2.0.1
* Increase the ListObjects/ListMultipartUploads special characters
* Provides the interface to get the details of the OssException
## 2015.11.25
* **Large version upgrade, no longer compatible with previous interface, new version has made great improvements to ease of use, suggesting that users migrate to a new version.**
## Modify the content
* PHP 5.2 is no longer supported
### Add the cotent
* Introduce namespace
* Interface naming and modification, using hump naming
* The interface is modified, and the common parameters are extracted from the Options parameter.
* The interface returns the result modification, processing the return result, and the user can directly get the data structure easily processed
* OssClient's constructor changes
* The Endpoint address that support CNAME and IP formats
* Rearrange the sample file organization structure and use function to organize the function points
* Add an interface that sets the connection timeout and requests timeout
* Remove the outdated interface associated with the Object Group
* The message in the OssException is changed to English
