Add entry on plugins.

README.md

@@ -38,6 +38,7 @@ Standard features
 * Serialization/deserialization support via [serde](https://crates.io/crates/serde) (requires the `serde` feature).
 * Scripts are [optimized](https://schungx.github.io/rhai/engine/optimize.html) (useful for template-based machine-generated scripts) for repeated evaluations.
 * Support for [minimal builds](https://schungx.github.io/rhai/start/builds/minimal.html) by excluding unneeded language [features](https://schungx.github.io/rhai/start/features.html).
+* Easy custom API development via [plugins](https://schungx.github.io/rhai/plugins/index.html) system powered by procedural macros.
 
 Protection against attacks
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RELEASES.md

@@ -1,6 +1,15 @@
 Rhai Release Notes
 ==================
 
+Version 0.19.0
+==============
+
+New features
+------------
+
+* Plugins support via procedural macros.
+
+
 Version 0.18.3
 ==============
 

doc/src/about/features.md

@@ -66,6 +66,8 @@ Flexible
 
 * Supports [most build targets](targets.md) including `no-std` and [WASM].
 
+* [Plugins] system powered by procedural macros simplifies custom API development.
+
 * Surgically [disable keywords and operators] to restrict the language.
 
 * Use as a [DSL] by [disabling keywords/operators][disable keywords and operators], [custom operators]