v0.6.0: Update Golang and change license

Full Changelog: v0.5.0...v0.6.0

v0.5.0: Update Golang and use scratch

Run the application from the scratch image

v0.4.0: Define the host from an environment variable

Define the host from an environment variable

v0.3.0: Provide certificate and private key files for authentication/authorization

Provide certificate and private key files for authentication/authoriz…

v0.2.0: Allow insecure server connections when using SSL

Using the flag `--insecure` allows insecure server connections when
using SSL, such as when the certificate is self-signed.

v0.1.0: Proxy requests to a target URI

Especially useful to publicly serve targets that are behind a firewall, or are insecure to be open.