* Introduced file management to track and access files used by a notebook ([#2022](https://github.com/livebook-dev/livebook/pull/2022), [#2044](https://github.com/livebook-dev/livebook/pull/2044), [#2072](https://github.com/livebook-dev/livebook/pull/2072), [#2083](https://github.com/livebook-dev/livebook/pull/2083), [#2085](https://github.com/livebook-dev/livebook/pull/2085), [#2111](https://github.com/livebook-dev/livebook/pull/2111), [#2112](https://github.com/livebook-dev/livebook/pull/2112), [#2113](https://github.com/livebook-dev/livebook/pull/2113), [#2131](https://github.com/livebook-dev/livebook/pull/2131), [#2167](https://github.com/livebook-dev/livebook/pull/2167))
* Improved debugging discoverability on app errors ([#2061](https://github.com/livebook-dev/livebook/pull/2061))
* Option to mark a directory as the default file selector location ([#2046](https://github.com/livebook-dev/livebook/pull/2046))
* Button for reevaluating apps on change ([#2066](https://github.com/livebook-dev/livebook/pull/2066))
* Button for retrying on app errors ([#2066](https://github.com/livebook-dev/livebook/pull/2066))
* Drag and drop actions for notebook files ([#2096](https://github.com/livebook-dev/livebook/pull/2096), [#2103](https://github.com/livebook-dev/livebook/pull/2103), [#2192](https://github.com/livebook-dev/livebook/pull/2192))
* Changed apps to not reevaluate automatically and require an action on change ([#2066](https://github.com/livebook-dev/livebook/pull/2066))
* Changed attached runtime to establish a hidden connection to avoid clustering errors on OTP25 ([#2110](https://github.com/livebook-dev/livebook/pull/2110))
* Clicking links within iframes to trigger navigation for the whole page ([#2160](https://github.com/livebook-dev/livebook/pull/2160))
* Setup cell output to never be exported ([#2184](https://github.com/livebook-dev/livebook/pull/2184))
### Fixed
* App menu to fit in the viewport on mobile ([#2092](https://github.com/livebook-dev/livebook/pull/2092))
* Smart cell editor initialization when no language is specified
* Race conditions during apps setup when deploying from a directory ([#2115](https://github.com/livebook-dev/livebook/pull/2115))
* Fixed `require` not propagating across cells in certain cases ([#2134](https://github.com/livebook-dev/livebook/pull/2134))