v1.0.1

Added an env var baseurl for Mailjet Sender.

As Mailjet API is missing IPv6 support, SMTP Firewall container with only IPv6 address cannot call the API.
To workaround, API call can be sent to Mailjet through a reverse proxy with IPv4/IPv6 dual-stack.
Set the baseurl env var for Mailjet Sender according to README file in order to apply your reverse proxy.

v1.0.0

First release