Namespaced binding handlers

[mdarens]

Good morning!

Thanks for writing these sweet bindings. I made a branch to get them working in projects at work (colliding with some other binding handlers, which also need to be namespaced).
I realize this would be a big breaking change and don't necessarily expect this to be merged as is, or ever, but thought you might find it useful to see what I changed.

Possible improvement: make the namespace configurable, perhaps triggering the registration of bindings manually as one does with knockout.punches

[faulknercs]

Thanks for contributing, I think, it is a good idea, will try to do something with this.