appveyor = { repository = "...", branch = "master", service = "github" }
# GitLab: `repository` is required. `branch` is optional; default is `master`
gitlab = { repository = "...", branch = "master" }
+# Circle CI: `repository` is required. `branch` is optiona; default is `master`
+circle-ci = { repository = "...", branch = "master" }
# Is it maintained resolution time: `repository` is required.
is-it-maintained-issue-resolution = { repository = "..." }
# Is it maintained percentage of open issues: `repository` is required.