diff --git a/CHANGELOG.md b/CHANGELOG.md
index cfc3b096..58434e5d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,8 @@ Rhai Release Notes
 Version 0.20.3
 ==============
 
+This version adds support to index into an integer number, treating it as a bit-field.
+
 Bug fixes
 ---------
 
@@ -13,7 +15,7 @@ Bug fixes
 Breaking changes
 ----------------
 
-* To keep the API consistent, strings are no longer iterable by default.  Use the `chars` method to iterator the characters in a string.
+* To keep the API consistent, strings are no longer iterable by default.  Use the `chars` method to iterate through the characters in a string.
 * `Dynamic::take_string` and `Dynamic::take_immutable_string` are renamed to `Dynamic::as_string` and `Dynamic::as_immutable_string` respectively.
 
 New features
diff --git a/Cargo.toml b/Cargo.toml
index 3de0c467..eb75503c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -20,7 +20,7 @@ smallvec = { version = "1.6", default-features = false, features = ["union"] }
 ahash = { version = "0.7", default-features = false }
 num-traits = { version = "0.2", default-features = false }
 smartstring = { version = "0.2.6", default-features = false }
-rhai_codegen = { version = "0.4.0", path = "codegen", default-features = false }
+rhai_codegen = { version = ">=0.4.0", path = "codegen", default-features = false }
 
 [features]
 default = ["smartstring/std", "ahash/std", "num-traits/std"] # remove 'smartstring/std' when smartstring is updated to support no-std
diff --git a/README.md b/README.md
index f56d179b..e4746f9f 100644
--- a/README.md
+++ b/README.md
@@ -38,7 +38,7 @@ Standard features
 * Freely pass Rust values into a script as [variables](https://rhai.rs/book/language/variables.html)/[constants](https://rhai.rs/book/language/constants.html) via an external [`Scope`](https://rhai.rs/book/rust/scope.html) - all clonable Rust types are supported; no need to implement any special trait. Or tap directly into the [variable resolution process](https://rhai.rs/book/engine/var.html).
 * Built-in support for most common [data types](https://rhai.rs/book/language/values-and-types.html) including booleans, [integers](https://rhai.rs/book/language/numbers.html), [floating-point numbers](https://rhai.rs/book/language/numbers.html) (including [`Decimal`](https://crates.io/crates/rust_decimal)), [strings](https://rhai.rs/book/language/strings-chars.html), [Unicode characters](https://rhai.rs/book/language/strings-chars.html), [arrays](https://rhai.rs/book/language/arrays.html) and [object maps](https://rhai.rs/book/language/object-maps.html).
 * Easily [call a script-defined function](https://rhai.rs/book/engine/call-fn.html) from Rust.
-* Relatively little `unsafe` code (yes there are some for performance reasons), and `unsafe` code is only used for type casting, never to get around the borrow checker.
+* Relatively little `unsafe` code (yes there are some for performance reasons).
 * Few dependencies - currently only [`smallvec`](https://crates.io/crates/smallvec), [`num-traits`](https://crates.io/crates/num-traits), [`ahash`](https://crates.io/crates/ahash) and [`smartstring`](https://crates.io/crates/smartstring).
 * Re-entrant scripting engine can be made `Send + Sync` (via the `sync` feature).
 * Compile once to [AST](https://rhai.rs/book/engine/compile.html) form for repeated evaluations.