Add notes tool to changelog

changelog.txt

@@ -30,6 +30,7 @@ Template for new versions:
 - `embark-anyone`: allows you to embark as any civilization, including dead and non-dwarven ones
 - `idle-crafting`: allow dwarves to independently satisfy their need to craft objects
 - `gui/family-affairs`: (reinstated) inspect or meddle with pregnancies, marriages, or lover relationships
+- `notes`: Manage map-specific notes
 
 ## New Features
 - `caravan`: DFHack dialogs for trade screens (both ``Bring goods to depot`` and the ``Trade`` barter screen) can now filter by item origins (foreign vs. fort-made) and can filter bins by whether they have a mix of ethically acceptable and unacceptable items in them