TaskTracker v0.4

New features
============

* A new command "fin" has been implemented to mark floating tasks and
  deadline tasks as finished.

* The "edit-float", "edit-deadline" and "edit-event" commands have been
  merged into a single "edit" command.

* The "del-float", "del-deadline" and "del-event" commands have been
  merged into a single "del" command.

* New commands "hide-finished" and "view" have been implemented.

* The filtered task lists are now manually managed (e.g. deleting a task
  will not affect the rest of the task indexes).

* "undo" and "redo" commands have been implemented.

Fixes and improvements
======================

* A bug has been fixed where the task book was not being saved after it
  has been modified.

* `Task`, which is the base class of `FloatingTask`, `DeadlineTask` and
  `EventTask`, has finally been made into an abstract class.

* A new command line parser has been implemented, bringing with it new
  improvements such as allowing flags to be specified in any order, as
  well as providing better error messages to the user.

* For task indexes, users now have to use `f1`, `d1`, `e1` etc. to refer
  to floating, deadline and event tasks.

src/main/java/seedu/address/MainApp.java

@@ -36,7 +36,7 @@
 public class MainApp extends Application {
     private static final Logger logger = LogsCenter.getLogger(MainApp.class);
 
-    public static final Version VERSION = new Version(0, 3, 0, true);
+    public static final Version VERSION = new Version(0, 4, 0, true);
 
     /** Name of the application */
     public static final String NAME = "Task Tracker";