Just as a warning, this is licensed under the AGPL, with a CLA that requires copyright assignment. So, they could pull the rug at any time:
2.3 Outbound License. Based on the grant of rights in Sections 2.1 and 2.2, if We include Your Contribution in a Material, We may license the Contribution under any license, including copyleft, permissive, commercial, or proprietary licenses.