2.5.0

• Do not include deprecated concat::setup anymore (#71)
• Only warn about pam deprecation if it's used (#72)
• Ability to specify a down script (#75)
• Support for client-cert-not-required in server config (#76)
• Support for auth-retry in client config (#76)
• Support for setenv in client config (#79)
• Support for setenv_safe in client config (#79)
• Support for cipher in client config (#80)
• Support for push route in client specific config (#80)