#321 intellisense list to be sorted by accessibility

[Zed A.]

I would suggest that the intellisense list of atrtibutes should be sorted by accessibility - public to private.

For example:

1. Public attributes (not starting with '_')
2. Special (public) attributes (__xxx__ - such as __init__)
3. Private by-syntax attributes (__xxxx)
4. Private by-notation attributes (_xxxx)

Or at least, simply:

1. Attributes not starting with '_'
2. Attributes starting with '_'

Keep doing great work!