Taskgraph repository has migrated

Hello everyone,

The Taskgraph repository has migrated from its prior location on hg.mozilla.org to https://github.com/taskcluster/taskgraph

The intent of this migration is to bring Taskgraph closer to the core Taskcluster platform and signal that it is the recommended way to build Decision tasks for Taskcluster. We also hope that moving Taskgraph to Github will foster contributions from outside of Release Engineering. For more details, see https://docs.google.com/document/d/1MYbHYcyzcmobDpRB9dqKVkyaIgWEN8R-mDvQGyRrIzk/edit#heading=h.pxna5lxr14rd.

We will be moving over to Github pull requests (en lieu of Phabricator) as well as Github issues (en lieu of Bugzilla). I will be migrating pre-existing bugs over to Github in the coming days.

Please let me know if you have any questions!