Enable cleaner org-habits

It is a small change in code but a big change in your interaction with
your habits (periodic TODO lists)

- Neatly log your TODO state changes into a drawer (default LOGBOOK)
- Enable org-habits to show a consistency graph of your habits

Reference:
- https://orgmode.org/manual/Tracking-TODO-state-changes.html
- https://orgmode.org/manual/Tracking-your-habits.html

CHANGELOG.md

@@ -4,6 +4,9 @@
 
 ### New features
 
+* Enable org-habits
+* Neatly track TODO state changes in a drawer (LOGBOOK) thereby
+  improving readability
 * Add a module to enable Literate Programming
 * Add a Racket module.
 * Add a Lua module.