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# Description This keeps plugin custom values that have requested drop notification around during the lifetime of a plugin call / stream by sending them to a channel that gets persisted during the lifetime of the call. Before this change, it was very likely that the drop notification would be sent before the plugin ever had a chance to handle the value it received. Tests have been added to make sure this works - see the `custom_values` plugin. cc @ayax79 # User-Facing Changes This is basically just a bugfix, just a slightly big one. However, I did add an `as_mut_any()` function for custom values, to avoid having to clone them. This is a breaking change.
Nushell core libraries and plugins
These sub-crates form both the foundation for Nu and a set of plugins which extend Nu with additional functionality.
Foundational libraries are split into two kinds of crates:
- Core crates - those crates that work together to build the Nushell language engine
- Support crates - a set of crates that support the engine with additional features like JSON support, ANSI support, and more.
Plugins are likewise also split into two types:
- Core plugins - plugins that provide part of the default experience of Nu, including access to the system properties, processes, and web-connectivity features.
- Extra plugins - these plugins run a wide range of different capabilities like working with different file types, charting, viewing binary data, and more.