Prepare release v2.0.1

Prepare release v2.0

fix: Docker image. (go-acme#704)

Prepare release v1.2.0 (go-acme#701)

fix: Change release condition. (go-acme#679)

Fix wrong repository URL (go-acme#563)

Prepare release v1.0.0 (go-acme#559)

* Prepare release v1.0.0

* review: remove infrastructure items from CHANGELOG.md

* review: updated CHANGELOG.md message

* review: added ACME v1 reference in README.md

* review: README.md updates

* review: removed experimental note

chore: ignore gitcookies. (go-acme#554)

lego version 0.4.1

Lego version 0.4.0