Misc. typos and whitespace fixes

[luzpaz]

Found via codespell -q 3

[coveralls]

Coverage remained the same at 92.252% when pulling 5c69b15 on luzpaz:misc-typos into 3af828e on dcowden:master.

[AppVeyorBot]

✅ Build cadquery 1.0.59 completed (commit d4ca864f35 by @luzpaz)

[codecov-io]

Codecov Report

Merging #285 into master will not change coverage.
The diff coverage is 100%.

@@           Coverage Diff           @@
##           master     #285   +/-   ##
=======================================
  Coverage   92.79%   92.79%           
=======================================
  Files          10       10           
  Lines        2207     2207           
=======================================
  Hits         2048     2048           
  Misses        159      159

Impacted Files	Coverage Δ
cadquery/freecad_impl/shapes.py	91.38% <ø> (ø)	⬆️
cadquery/freecad_impl/exporters.py	94.26% <ø> (ø)	⬆️
cadquery/freecad_impl/console_logging.py	92.3% <ø> (ø)	⬆️
cadquery/cqgi.py	87.34% <ø> (ø)	⬆️
cadquery/selectors.py	99.09% <ø> (ø)	⬆️
cadquery/cq.py	94.27% <ø> (ø)	⬆️
cadquery/freecad_impl/geom.py	92.47% <100%> (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 3af828e...5c69b15. Read the comment docs.

[jmwright]

Thanks @luzpaz !