update changelog

Author: kaikalii

changelog.md

@@ -4,11 +4,12 @@ Uiua is not yet stable.
 
 <!-- This version is not yet released. If you are reading this on the website, then these changes are live here. -->
 
-## 0.17.2 - 2025-??-??
+## 0.17.2 - 2025-10-0?
 ### Interpreter
 - Fix a bug in `/F⊞G`
 - Fix a bug in function callability checking
 - Fix a bug in filled adjacent [`stencil ⧈`](https://uiua.org/docs/stencil)
+- Fix a bug in filled [`scan \\`](https://uiua.org/docs/scan)
 
 ## 0.17.1 - 2025-09-27
 ### Interpreter