Minor changelog updates

CHANGELOG.md

@@ -8,19 +8,23 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ### Added
 
-- Standard library functions (e.g. `random`, `round_places`, `dice`) have been moved to the core Yarn Spinner library.
-- Added a `format` function to the standard library, this works identical to the C# `string.Format`.
+- Standard library functions (e.g. `random`, `round_places`, `dice`) have been moved from Yarn Spinner for Unity to the core Yarn Spinner library.
+- Added a `format` function to the standard library.
+  - This method works identically to the C# `string.Format`, but currently only accepts one parameter.
+  - `format("{0}", 123)` will return the string "123".
+  - `format("${0:F2}", 0.451)` will return the string "$0.45".
+  - For more information on string formatting, see the [.NET documentation on numeric formatting strings](https://learn.microsoft.com/en-us/dotnet/standard/base-types/standard-numeric-format-strings#standard-format-specifiers).
 
 ### Changed
 
 - Updated the schema for .ysls.json files:
   - Commands may no longer specify a return type.
-  - Functions must now specify a return type.
+  - Functions _must_ now specify a return type.
   - Changed the definition of 'types' to be an enum of "string", "number", "bool", or "any".
     - Enums in JSON schema are type sensitive, so a warning will be issued for types that have capital letters. To fix these warnings, change your type names in your `.ysls.json` file to be lowercase. (These warnings have no impact on your Yarn script editing experience or runtime behaviour.)
-- Empty nodes will no longer be included in the compiled output
-  - a warning diagnostic will be generated for each empty node
-- Fixed a bug where set-referencing inferred value set statements would crash the compiler
+- Empty nodes will no longer be included in the compiled output.
+  - A warning diagnostic will be generated for each empty node.
+- Fixed a bug where self-referencing inferred value set statements (e.g. `<<set $a = $a + 1>>`, where `$a` is not explicitly declared) would crash the compiler.
 - The language server no longer truncates XML documentation comments when it reaches a nested XML node. 
 - Updated dependency versions:
   - Google.Protobuf: Moved from `3.15.0` to `3.25.2`.