update TODO and CHANGELOG

Signed-off-by: Grant Ramsay <seapagan@gmail.com>

Author: seapagan

CHANGELOG.md

@@ -8,6 +8,11 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 
 ## [Unreleased](https://github.com/seapagan/sqliter-py/tree/HEAD)
 
+**New Features**
+
+- Add ability to mark a field as UNIQUE ([#46](https://github.com/seapagan/sqliter-py/pull/46)) by [seapagan](https://github.com/seapagan)
+- Implement user-defined indexes ([#45](https://github.com/seapagan/sqliter-py/pull/45)) by [seapagan](https://github.com/seapagan)
+
 **Bug Fixes**
 
 - Ensure context-manager ignores the `auto_commit` setting. ([#43](https://github.com/seapagan/sqliter-py/pull/43)) by [seapagan](https://github.com/seapagan)

TODO.md

@@ -2,6 +2,8 @@
 
 ## General Plans and Ideas
 
+- add (optional) `created_at` and `updated_at` fields to the BaseDBModel class
+  which will be automatically updated when a record is created or updated.
 - add attributes to the BaseDBModel to read the table-name, file-name, is-memory
   etc.
 - add an 'execute' method to the main class to allow executing arbitrary SQL