1.1.3 release version

1. fix: enhance error reporting by including HTTP status code in downloader and task handling
2. fix: getenv(TERM) 允许返回 NULL，在阿里云轻量级服务器上运行闪退
3. fix: replace free() with SSL_free() for proper SSL resource management in IOStream
4. fix: correct typos in comments and error messages across multiple files

1.1.2 release version

• fix compatible issues with high gcc 4.4.+
• Fix infinite loop in Downlaoder::download_thread() and add "-H, --host=host" option (thanks Yunkai Zhang qiushu.zyk@taobao.com)
• fix bug: double free or segment fault (thanks zmldndx)