0.2

Our v0.2 release!
Working features

• Add tasks with "add watch Star Wars from tomorrow 6pm to Sunday 8pm" format
• Update UI to show a complete list of added tasks in one panel, show scheduled time of a task, underline marked tasks, and display command execution result in a pop-up window
• Navigate to menubar through alt + left/right/up/down from keyboard
• Rename a task with "rename 1 new-task-name".
• Mark and unmark a task to reflect completion status with "mark 1"/"unmark 1"