v2.13.0

Changelog

• 488f789 Remove trailing whitespaces from certificates (#155) (#156)
• 5565b9f add metrics for x509 NotBefore attribute (#170)
• d03d17c adding support to specify env: via values (#167)
• 97ba226 fixed ^C^V error in main.go (#157)
• 28bb9e5 fixed badges