don’t immediately import ipython

[nstarman]

Description

the ipython sub-package should not be imported immediately. Not all code is run in the ipython kernel and it's not necessary to load this module in that case.

Now utilipy.ipython is imported by

from utilipy import ipython

PR Checklist

• Check out the contributing guidelines and code of conduct
• Check out the contributing workflow ( for a practical example click here )
• Give a detailed description of the PR above.
• Document changes in the CHANGES.rst file. See existing changelog for examples.
• Add tests, if applicable, to ensure code coverage never decreases.
• Make sure the docs are up to date, if applicable, particularly the docstrings and RST files in docs folder.
• Ensure linear history by rebasing, when requested by the maintainer.

[codecov]

Codecov Report

Merging #20 (fbcab50) into master (47affaf) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #20   +/-   ##
=======================================
  Coverage   71.13%   71.13%           
=======================================
  Files          48       48           
  Lines        2207     2207           
=======================================
  Hits         1570     1570           
  Misses        637      637           

Impacted Files	Coverage Δ
utilipy/__init__.py	50.00% <ø> (ø)

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