Mention features in lib.rs and Variant

Author: Bromeon

gdnative-core/src/core_types/variant.rs

@@ -14,10 +14,15 @@ mod serialize;
 
 // TODO: implement Debug, PartialEq, etc.
 
-/// A `Variant` can represent many of godot's core types.
+/// A `Variant` can represent all Godot values (core types or `Object` class instances).
 ///
-/// The underlying data can be either stored inline or reference-counted,
-/// dependning on the size of the type and whether the it is trivially copyable.
+/// The underlying data is either stored inline or reference-counted on the heap,
+/// depending on the size of the type and whether the it is trivially copyable.
+///
+/// If you compile godot-rust with the `serde` feature enabled, you will have
+/// access to serialization/deserialization support: the traits `Serializable`
+/// and `Deserializable` will be automatically implemented on [`VariantDispatch`]
+/// as well as most of the types in [`core_types`].
 pub struct Variant(pub(crate) sys::godot_variant);
 
 macro_rules! variant_constructors {

gdnative/src/lib.rs

@@ -15,7 +15,7 @@
 //!
 //! Since it is easy to expect containers and other types to allocate a copy of their
 //! content when using the `Clone` trait, some types do not implement `Clone` and instead
-//! implement [`NewRef`](./trait.NewRef.html) which provides a `new_ref(&self) -> Self` method
+//! implement [`NewRef`](object::NewRef) which provides a `new_ref(&self) -> Self` method
 //! to create references to the same collection or object.
 //!
 //! ## Generated API types
@@ -41,9 +41,12 @@
 //!
 //! ## Feature flags
 //!
-//! ### `bindings`
-//!
-//! *Enabled* by default. Includes the crates.io version of the bindings in the `api` module.
+//! * `bindings` -- *enabled* by default. Includes the crates.io version of the bindings in the
+//!   `api` module. Disable if you want to use a custom Godot version.
+//! * `serde` -- *disabled* by default. Enable for `serde` support. See also
+//!   [`Variant`](core_types::Variant).
+//! * `formatted` -- *disabled* by default. Enable if the generated binding source code should
+//!   be human-readable.
 //!
 //! [thread-safety]: https://docs.godotengine.org/en/stable/tutorials/threads/thread_safe_apis.html
 //! [custom-version]: https://github.com/godot-rust/godot-rust/#other-versions-or-custom-builds