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# Description Changes the `captures` field in `Closure` from a `HashMap` to a `Vec` and makes `Stack::captures_to_stack` take an owned `Vec` instead of a borrowed `HashMap`. This eliminates the conversion to a `Vec` inside `captures_to_stack` and makes it possible to avoid clones altogether when using an owned `Closure` (which is the case for most commands). Additionally, using a `Vec` reduces the size of `Value` by 8 bytes (down to 72). # User-Facing Changes Breaking API change for `nu-protocol`.
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.