changelog: Describe changes since 0.0.25

Author: gnprice

docs/changelog.md

@@ -2,6 +2,22 @@
 
 ## Unreleased
 
+### Highlights for users
+
+* Resolve or unresolve a topic, from the menu after you
+  press and hold the topic. (#744)
+* Autocomplete now offers `@all`, `@topic`, and other
+  wildcards. (#234)
+* Channel names starting with emoji go at the start of the
+  list. (#1202)
+* Too many other improvements and fixes to describe them all here.
+
+
+### Highlights for developers
+
+* Resolved: #1205, #1289, #942, #1238, #1202, #1219, #1204, #1171,
+  PR #1296, #234, #1207, #1330, #1309, #725, #744
+
 
 ## 0.0.25 (2025-01-13)