Release 2.5.0
变更日志：
添加函数计算 initializer 的支持
添加 verbose 选项，支持输出更多运行日志
重试次数支持通过 fun config 配置
Changelog：
Add initializer support for Aliyun Function Compute
add verbose option to support printing out more logs
add retries for fun config
Download:
fun-v2.5.0-linux-x64.zip
fun-v2.5.0-linux-x86.zip
fun-v2.5.0-macos-x64.zip
fun-v2.5.0-macos-x86.zip
fun-v2.5.0-win-x64.exe.zip
fun-v2.5.0-win-x86.exe.zip