Update changelog.

Author: amjith

CHANGELOG.md

@@ -2,7 +2,12 @@
 
 ### Features
 
-*
+* The 'llm' library is now a default dependency not installed on demand.
+* The `\llm` command now has three modes. Succinct, Regular and Verbose.
+
+  Succinct = `\llm-` - This will return just the sql query. No explanation.
+  Regular = `\llm` - This will return just the sql query and the explanation.
+  Verbose = `\llm+` - This will print the prompt sent to the LLM and the sql query and the explanation.
 
 ### Bug Fixes