https://www.androidcentral.com/cyanogen-os-131-rolling-out-oneplus-one-add-skype-onenote-and-more-microsoft-mods
Cyanogen OS 13.1 brings mods from Microsoft and more to the OnePlus One | Android Central
May 9, 2019 - Cyanogen OS 13.1 is currently rolling out for OnePlus One owners. It includes new mods from Microsoft as part of its partnership with Cyanogen.