DOC: Improve docstrings

[scottclowe]

No description provided.

[codecov]

Codecov Report

Merging #253 (b0d7f8c) into master (09013ee) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #253   +/-   ##
=======================================
  Coverage   93.87%   93.87%           
=======================================
  Files           8        8           
  Lines        1094     1094           
  Branches      254      254           
=======================================
  Hits         1027     1027           
  Misses         34       34           
  Partials       33       33           

Flag	Coverage Δ
nbsmoke	60.78% <ø> (+0.18%)	⬆️
unittests	93.60% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
fissa/core.py	96.58% <ø> (ø)

---

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 09013ee...b0d7f8c. Read the comment docs.