devguide Docs rst to ipynb

[vEpiphyte]

• Convert devguide to jupyter notebook
• Expose methods in jupyter to allow accessing the raw cortex object.

[codecov]

Codecov Report

Merging #1209 into master will increase coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #1209      +/-   ##
==========================================
+ Coverage   93.53%   93.53%   +<.01%     
==========================================
  Files         124      124              
  Lines       16601    16602       +1     
==========================================
+ Hits        15527    15528       +1     
  Misses       1074     1074

Impacted Files	Coverage Δ
synapse/lib/jupyter.py	98.27% <100%> (+0.01%)	⬆️

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