// Build it with:
//   $ dot -Tsvg releasing.dot >releasing.svg

digraph tagged_release {
  size = "5,5"
  // Arrows go up.
  rankdir = BT
  subgraph left {
    // Group the left nodes together.
    ci012abc -> pr101 -> ci345cde -> pr102
    style = invis
  }
  subgraph right {
    // Group the right nodes together.
    version_commit -> dev_commit
    style = invis
  }
  { // Align the version commit and the info about it.
    rank = same
    // Align them with pr101
    pr101
    version_commit
    // release_info shows the change in the commit.
    release_info
  }
  { // Align the dev commit and the info about it.
    rank = same
    // Align them with 345cde
    ci345cde
    dev_commit
    dev_info
  }
  // Join the nodes from subgraph left.
  pr99 -> ci012abc
  pr102 -> pr100
  // Do the version node.
  pr99 -> version_commit
  dev_commit -> pr100
  tag -> version_commit
  pr99 [
    label = "Merge PR #99"
    shape = box
    fillcolor = "#ccccff"
    style = "filled"
    fontname = "Helvetica Neue, Helvetica, Segoe UI, Arial, freesans, sans-serif"
  ];
  ci012abc [
    label = "012abc"
    shape = circle
    fillcolor = "#ffffcc"
    style = "filled"
    fontname = "Consolas, Liberation Mono, Menlo, Courier, monospace"
  ];
  pr101 [
    label = "Merge PR #101"
    shape = box
    fillcolor = "#ccccff"
    style = "filled"
    fontname = "Helvetica Neue, Helvetica, Segoe UI, Arial, freesans, sans-serif"
  ];
  ci345cde [
    label = "345cde"
    shape = circle
    fillcolor = "#ffffcc"
    style = "filled"
    fontname = "Consolas, Liberation Mono, Menlo, Courier, monospace"
  ];
  pr102 [
    label = "Merge PR #102"
    shape = box
    fillcolor = "#ccccff"
    style = "filled"
    fontname = "Helvetica Neue, Helvetica, Segoe UI, Arial, freesans, sans-serif"
  ];
  version_commit [
    label = "678fed"
    shape = circle
    fillcolor = "#ccffcc"
    style = "filled"
    fontname = "Consolas, Liberation Mono, Menlo, Courier, monospace"
  ];
  dev_commit [
    label = "456dcb"
    shape = circle
    fillcolor = "#ffffcc"
    style = "filled"
    fontname = "Consolas, Liberation Mono, Menlo, Courier, monospace"
  ];
  pr100 [
    label = "Merge PR #100"
    shape = box
    fillcolor = "#ccccff"
    style = "filled"
    fontname = "Helvetica Neue, Helvetica, Segoe UI, Arial, freesans, sans-serif"
  ];
  release_info [
    label = "pkg/version/base.go:\ngitVersion = \"v0.5\";"
    shape = none
    fontname = "Helvetica Neue, Helvetica, Segoe UI, Arial, freesans, sans-serif"
  ];
  dev_info [
    label = "pkg/version/base.go:\ngitVersion = \"v0.5-dev\";"
    shape = none
    fontname = "Helvetica Neue, Helvetica, Segoe UI, Arial, freesans, sans-serif"
  ];
  tag [
    label = "$ git tag -a v0.5"
    fillcolor = "#ffcccc"
    style = "filled"
    fontname = "Helvetica Neue, Helvetica, Segoe UI, Arial, freesans, sans-serif"
  ];
}