added changelog

CHANGELOG.md

@@ -0,0 +1,22 @@
+# Selphybot Changelog
+Updates are listed in reverse chronological order.
+
+### 1.1 (dev)
+- cooldowns are now stored per-user, not globally, and no longer apply in DMs
+- multiple admins can now be defined in the config
+- admins can now use DM-only commands anywhere
+
+## 1.0
+Marks the first release after the initial refactoring. This contains:
+- the entire logic registerCommand
+    - various matching modes for commands
+    - auto moderation actions
+    - different switches to control command behavior
+    - custom functions as parameters to more advanced commands
+    - cooldowns for each command
+- handling of newly joined users
+- the ability to add an admin
+    - and special commands for them
+    - admins can use commands that are on cooldown
+- lots of specific functions used on Selphy’s server
+- probably more that I’m forgetting