Fix complex kwarg

[ewu63]

Purpose

The complex keyword argument has been renamed to isComplex in pyGeo. This PR makes the corresponding updates here. I also renamed a few other things to make the code more readable.

Type of change

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (non-backwards-compatible fix or feature)
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no API changes)
• Documentation update
• Maintenance update
• Other (please describe)

Testing

Existing tests should run and no longer raise a warning.

Checklist

• I have run flake8 and black to make sure the code adheres to PEP-8 and is consistently formatted
• I have run unit and regression tests which pass locally with my changes
• I have added new tests that prove my fix is effective or that my feature works
• I have added necessary documentation

[codecov]

Codecov Report

Merging #173 (c6fbb82) into master (f999afc) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #173   +/-   ##
=======================================
  Coverage   42.74%   42.74%           
=======================================
  Files          15       15           
  Lines        3495     3495           
=======================================
  Hits         1494     1494           
  Misses       2001     2001           

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update f999afc...c6fbb82. Read the comment docs.