Premier ACME client library for Go (library)

 acmez - ACME client library for Go godoc
 (https://pkg.go.dev/github.com/mholt/acmez)
 .
 ACMEz is a fully-compliant RFC 8555 (https://tools.ietf.org/html/rfc8555)
 (ACME) implementation in pure Go. It is lightweight, has an elegant Go
 API, and its retry logic is highly robust against external errors. ACMEz
 is suitable for large-scale enterprise deployments.