D kernel for Jupyter notebook

[Laeeth Isharc]

Proof of concept works, but it requires some further development 
to be useful to do work in.

https://github.com/kaleidicassociates/jupyterd

It uses D repl currently - this was written for a console 
interface and probably you will encounter difficulties running it 
in a notebook environment.  I guess one would like to treat all 
functions defined in a single notebook as part of the same 
session and to execute immediate statements as part of a main 
specific to that cell.

The kernel is a bit flakey - takes time to come on line and you 
might need to reconnect to it sometimes.

To Do:

1.    Add HTML and markdown table output to display arrays of 
structs or of dicts in a useful manner
2.    Integrate with mir and other numeric libraries
3.    Integrate with charting
4.    Consider adding to Dlang tour and run.dlang.io when stable
5.    Integrate with dpp
6.    Integrate with dub


1 and 3 should be quite simple.  One wouldn't want to write a 
large program in Jupyter, but it's helpful for exploratory data 
analysis and programming where the code that does the work is 
already in D.