Revert "V0.5.10: [reformat] clean up codes."

This reverts commit e75447803e17a24fa06e5bc1f9e394f2f9d988d0.

Conflicts:
	src/main/java/com/epictodo/logic/CRUDLogic.java
	src/main/java/com/epictodo/model/DeadlineTask.java
	src/main/java/com/epictodo/model/FloatingTask.java
	src/main/java/com/epictodo/model/Task.java
	src/main/java/com/epictodo/model/TimedTask.java