Bump v0.13.0

[Xieyt]

Features

• Introduce bench_config.toml for bench stack configuration management. #158
• Introduce update command for updating configuration of bench env. #15
• Support flag --environment <prod/dev> in create and update command. #15
• Support flag --developer-mode <enable/disable> in create and update command. #15
• Support flag --admin-tools <enable/disable> in create and update command. #15
• Introduce command fm ssl for managing ssl related operations. #15

Enhancements

• Fix naming of sites to bench #155