todomvc Backbone.View errors on compile: 'super' must be called before accessing 'this' in the constructor of a derived class.

[rkaramc]

https://github.com/jashkenas/backbone/issues/3560 see discussion in the backbone issue.

The sample has to be updated to use a getter for tagName instead of setting it in the constructor using this.tagName.

[mhegazy]

A PR would be appreciated.