add new "is_completed" column

app.py

@@ -30,6 +30,7 @@ class Task(db.Model):
     id = db.Column(db.Integer, primary_key=True)
     title = db.Column(db.String(100))
     description = db.Column(db.Text)
+    is_completed = db.Column(db.Boolean)
     created_timestamp = db.Column(db.Integer)
     due_timestamp = db.Column(db.Integer)
 
@@ -50,8 +51,7 @@ class Event(db.Model):
 
 @app.route('/')
 def index():
-    events = Event.query.all()
-    return render_template('index.html', events=events, datetime=datetime, date=date)
+    return redirect('/events')
 
 @app.route('/events')
 def events():