RFS: traitlets -- Lightweight Traits-like package

[Julien Puydt <julien.puydt@laposte.net>]

Hi,

* Package name    : traitlets
  Version         : 4.0.0
  Upstream Author : IPython Development Team
* URL             : https://github.com/ipython/traitlets
* License         : BSD-3-clause
  Programming Lang: Python
  Description     : Lightweight Traits-like package
 A lightweight pure-Python derivative of Enthought Traits, used
 for configuring Python objects.
 .
 It powers the config system of IPython and Jupyter.

It is one of the last depends before the newer IPython can be packaged 
(there is still testpath).

Cheers,

Snark on #debian-python