Major: 0.3.126

New Features:
1. Move the remove detection in remove function of the tree  view.
Major: 0.3.127

New Features:
1. Support fast remove several rows.
Major: 0.3.128

New Features:
1. Now each one will manage its own proxy model. Abandon proxy model
memory pool.
Major: 0.3.128

Updates:
1. Remove the proxy model memory pool class.
Major: 0.3.129

New Features:
1. Change the proxy model policy: now will only make a shadow of the
current playing model when changing the model.