Update README.md

- clarify install pre-requisites
- update supported Python / Wagtail versions

README.md

@@ -24,13 +24,16 @@ We'll be at Wagtail Space US this year! The Call for Participation and Registrat
 
 Wagtail Localize requires the following:
 
-- Python (3.9, 3.10, 3.11)
+- Python (3.9, 3.10, 3.11, 3.12, 3.13)
 - Django (4.2, 5.0, 5.1)
-- Wagtail (5.2, 6.1) with [internationalisation enabled](https://docs.wagtail.org/en/stable/advanced_topics/i18n.html#configuration)
+- Wagtail (5.2 - 6.4) with [internationalisation enabled](https://docs.wagtail.org/en/stable/advanced_topics/i18n.html#configuration)
 - [wagtail-modeladmin](https://pypi.org/project/wagtail-modeladmin/) if `using wagtail_localize.modeladmin` and Wagtail >= 5.2
 
 ## Installation
 
+Before you start, follow Wagtail's [configuration guide](https://docs.wagtail.org/en/stable/advanced_topics/i18n.html#configuration)
+to enable internationalisation in Wagtail and Django.
+
 Install using `pip`:
 
 ```shell