v15.2.0-rc.1

✨ Features

• Remove support for ArrayBuffer in unstable MSC3089 createFile() and createNewVersion() and instead use same content types as handled by MatrixClient.uploadContent(). This enables support for Node.js. (#2014).
• Support for password-based backup on Node.js (#2021).
• Add optional force parameter when ensuring Olm sessions (#2027).

🐛 Bug Fixes

• Fix call upgrades (#2024). Contributed by @SimonBrandner.