Enaml-native

- Change minimumSdkLevel and APP_PLATFORM to 21

- Simplify location by using a dict
- Support more notificaton features

- Add notifications

- Allow appending to a TextView directly
- Disable scrollbars on loading view
- Let loading view be overridden

- Add missing click handlers in `ListView` and `ListItem`

- [Glide](http://bumptech.github.io/glide/) is not added for loading images into ImageView's
by default.
- `JavaMethod` and `JavaStaticMethod` will now strip any trailing underscores from the name
allowing you to define multiple method with different signatures with the same name by
appending 1 or more '_'.
- Add files for building the conda recipe here