1Added  on_query_context/should_perform_action support for `disabled_classes_of_default_bindings`
Added a hierarchy of str subclasses used to `markup` over-ridden default bindings with a class.
Fix logic error in `default_override_binding_is_disabled_by_class` introduce by factoring out a routine
A start at marking up some of the over-rides by class
Updated `create_record` to add the class to the emmet_action_enabled.* contexts with a ${class}_default suffix.
Make the binding generator add a list of over-rides grouped by class to `// this is generated` header
Documenting the setting in the `Emmet.sublime-settings` file
Add new generated bindings marked up with classes
Merge branch 'st3' of github.com:sublimator/emmet-sublime into st3