docs(CHANGES) Note Waiter

Author: tony

CHANGES

@@ -34,6 +34,18 @@ $ uvx --from 'libtmux' --prerelease allow python
 
 - _Future release notes will be placed here_
 
+### New features
+
+#### Waiting (#582)
+
+Added experimental `waiter.py` module for polling for terminal content in tmux panes:
+
+- Fluent API inspired by Playwright for better readability and chainable options
+- Support for multiple pattern types (exact text, contains, regex, custom predicates)
+- Composable waiting conditions with `wait_for_any_content` and `wait_for_all_content`
+- Enhanced error handling with detailed timeouts and match information
+- Robust shell prompt detection
+
 ## libtmux 0.47.0 (2025-11-01)
 
 ### Breaking changes
@@ -64,8 +76,8 @@ $ uvx --from 'libtmux' --prerelease allow python
 
 _Maintenance only, no bug fixes or new features_
 
-A version branch has been created at v0.46.x, the next release of v0.47.0 may 
-be a few months in waiting (watchers / snapshots are in development in #587). 
+A version branch has been created at v0.46.x, the next release of v0.47.0 may
+be a few months in waiting (watchers / snapshots are in development in #587).
 
 ### Documentation