misc(readme): Add Godot version support notice.

CHANGELOG.md

@@ -0,0 +1,29 @@
+# v1.0.0 -> v2.0.0
+
+## Breaking Changes
+
+- `XMLNodeType` was removed due to not being used anywhere.
+- `beautify` parameter in all `XML.dump_*()` functions was renamed to `pretty`.
+- Move `XMLDocument.to_dict()` to `XMLNode.to_dict()`.
+- Make `XMLNode.to_dict()` opinionated by removing all controllability functions.
+- Change structure of `XMLNode.to_dict()`'s output.
+
+## Features
+
+- `XML` can now handle semantically invalid XML.
+- Added `indent_level` and `indent_length` to control initial indentation level and level width respectively.
+- Allow accessing `XMLNode` children by their name if their name is unqiue amongst that `XMLNode`'s children. Works in the editor too.
+- Document structure of `XMLNode.to_dict()`'s output.
+
+## Bug Fixes
+
+- Fix empty standalone nodes geting two spaces before `>` when prettified.
+- Fix node content being on the same line as it's node when prettified.
+
+## Internal Changes
+
+- Remove pointless checks in parsing logic.
+- Properly document code to make contributing easier.
+- Reformat code to use 4-space indent instead of the previous tabs.
+- Remove commented out code in some places.
+- Refactor prettifier and dictionary converter to be recursive-descent, significantly simplifying logic.

README.md

@@ -2,6 +2,8 @@
 
 This addon adds support for manipulating XML data in Godot 4 with ease.
 
+> Supports Godot 4.0, 4.1 and the likely the upcoming 4.2.
+
 > HINT: Migrating from v1? See [changelog](./CHANGELOG.md) for a complete list of breaking (and not) changes.
 
 ## Features