Use Github GraphQL api

[mischnic]

don't use library, has to be fast

[mischnic]

List commits:

{
  viewer {
    repository(name: "python-ci") {
      ref(qualifiedName: "master") {
        target {
          ... on Commit {
            history(first: 3) {
              edges {
                node {
                  oid 
                  messageHeadline
                  committedDate
                  url
                  author {
                    avatarUrl
                    name
                  }
                }
              }
            }
          }
        }
      }
    }
  }
}