+## Example
+
+```rust
+let mut data = anymap::AnyMap::new();
+assert_eq!(data.get(), None::<&i32>);
+data.insert(42i32);
+assert_eq!(data.get(), Some(&42i32));
+data.remove::<i32>();
+assert_eq!(data.get::<i32>(), None);
+
+#[derive(Clone, PartialEq, Debug)]
+struct Foo {
+ str: String,
+}
+
+assert_eq!(data.get::<Foo>(), None);
+data.insert(Foo { str: format!("foo") });
+assert_eq!(data.get(), Some(&Foo { str: format!("foo") }));
+data.get_mut::<Foo>().map(|foo| foo.str.push('t'));
+assert_eq!(&*data.get::<Foo>().unwrap().str, "foot");
+```
+
+## Features
+
+- Store up to one value for each type in a bag.
+- Add `Send` or `Send + Sync` bounds.
+- You can opt into making the map `Clone`. (In theory you could add all kinds of other functionality, but you can’t readily make this work *generically*, and the bones of it are simple enough that it becomes better to make your own extension of `Any` and reimplement `AnyMap`.)
+- no_std if you like.
+
+## Cargo features/dependencies/usage
+
+Typical Cargo.toml usage:
+
+```toml
+[dependencies]
+anymap = "1.0.0-beta.1"
+```
+
+No-std usage, using `alloc` and the [hashbrown](https://rust-lang.github.io/hashbrown) crate instead of `std::collections::HashMap`:
+
+```toml
+[dependencies]
+anymap = { version = "1.0.0-beta.1", default-features = false, features = ["hashbrown"] }
+```
+
+The `std` feature is enabled by default. The `hashbrown` feature overrides it. At least one of the two must be enabled.