TODO for bind method
observer start impl
observer naive impl
function for reaction on change
html to text
new method for adapter: set_attribute
view to view attribute
remove null attributes; bind return self
general handler function for events
work with checkbox
work with radio input
work with properties
possible ie9 support
base implementation view to model binding
work with attributes
bind for View to Model
small code refactor
small todo
use previous value
reaction when input or textarea