docs(CHANGES): Add release notes for options and hooks features

why: Document new OptionsMixin and HooksMixin features for 0.49.x release.
what:
- Add breaking changes for renamed Window option methods
- Document OptionsMixin with set_option, show_option, show_options, unset_option
- Document HooksMixin with set_hook, show_hook, unset_hook, set_hooks
- Document new Window.set_option() arguments

Author: tony

CHANGES

@@ -44,6 +44,58 @@ deprecation announced in v0.48.0.
 - Removed version guards throughout the codebase
 - For users on older tmux, use libtmux v0.48.x
 
+### Breaking changes
+
+#### Renamed commands
+
+- Rename `Window.set_window_option()` to {meth}`Window.set_option()` (#516)
+
+  Deprecate `Window.set_window_option()`
+
+- Rename `Window.show_window_option()` to {meth}`Window.show_option()` (#516)
+
+  Deprecate `Window.show_window_option()`
+
+- Rename `Window.show_window_options()` to {meth}`Window.show_options()` (#516)
+
+  Deprecate `Window.show_window_options()`
+
+### Improved options
+
+- Expand option support to server, session, window, and pane
+- Enhance and streamline option support via {class}`options.OptionsMixin`.
+
+  - `set_option`
+  - `show_option`
+  - `show_options`
+  - `unset_option`
+
+- {meth}`Window.set_option()` (#516)
+
+  Add arguments:
+
+  - `format` -> `-F`
+  - `unset` -> `-u`
+  - `global` -> `-g`
+  - `unset_panes` -> `-U`: Also unset other panes in windows
+  - `prevent_overwrite`: `-o`
+  - `suppress_warnings`: `-q`
+  - `append`: `-a`
+
+#### Hooks
+
+Add {class}`hooks.HooksMixin` for managing tmux hooks programmatically:
+
+- {meth}`~hooks.HooksMixin.set_hook` - Set a hook with optional index
+- {meth}`~hooks.HooksMixin.show_hook` - Show current value of a hook
+- {meth}`~hooks.HooksMixin.unset_hook` - Remove a hook
+
+Bulk operations API for managing indexed hooks:
+
+- {meth}`~hooks.HooksMixin.set_hooks` - Set multiple indexed hooks at once
+
+HooksMixin is available on {class}`Server`, {class}`Session`, {class}`Window`, and {class}`Pane`.
+
 ## libtmux 0.48.0 (2025-11-28)
 
 ### Breaking Changes