Show first 10 tasks in list command.
List command prints all tasks if * is used.
Remove DRY violation in test_console, use a list of tasks by default.
Add get_tasks_by_filter api to filter list of tasks by string.
Add a FakeTaskPlugin with pluggable task list.
Add filter for tasks in list command for console.
Pomodoro.current_task should be none for a session not started.
Add stop command to shell.
Add tests for TaskPlugin.
Add get_task_by_id api to TaskPlugin.