* The `_experimental_boost` argument can now be removed. Boost is now enabled on all modal Functions.
0.63.77
* Setting `_allow_background_volume_commits` is no longer necessary and has been deprecated. Remove this argument in your decorators.
0.63.36
- Image layers defined with a `modal.build` method will now include the values of any _class variables_ that are referenced within the method as part of the layer cache key. That means that the layer will rebuild when the class variables change or are overridden by a subclass.
0.63.22
* Fixed an error when running `modal.build` methods that was introduced in v0.63.19
0.63.20
* Fixed bug where `self.method.local()` would re-trigger lifecycle methods in classes
0.63.14
* Adds `Cls.lookup()` backwards compatibility with classes created by clients prior to `v0.63`.
**Important**: When updating (to >=v0.63) an app with a Modal `class` that's accessed using `Cls.lookup()` - make sure to update the client of the app/service **using** `Cls.lookup()` first, and **then** update the app containing the class being looked up.