Compatibility with future Go versions

[Bo98]

Just a heads up that Go 1.17 (and the just-released 1.16 without first changing GO111MODULE) won't support builds that aren't in module-aware mode.

The master build should work but the last tag (v0.6.3) does not. Is it possible you can tag a new release for this?

https://blog.golang.org/go116-module-changes