More Progress

* List by default, UI only if specified
* Archive tasks to done list
* Fix filter

model.go

@@ -4,7 +4,7 @@ import (
 	"strings"
 	"time"
 
-	todotxt "github.com/JamesClonk/go-todotxt"
+	todotxt "github.com/br0xen/go-todotxt"
 )
 
 func (a *AppState) addTask(taskString string) error {
@@ -39,9 +39,11 @@ func (a *AppState) archiveTask(id int) error {
 	if task, err = a.TaskList.GetTask(id); err != nil {
 		return err
 	}
-	a.TaskList.RemoveTask(*task)
 	task.Completed = true
-	a.DoneList.AddTask(task)
+	if err := a.TaskList.ArchiveTaskToFile(*task, app.getDoneFile()); err != nil {
+		return err
+	}
+	a.TaskList.RemoveTask(*task)
 	return nil
 }