Faster modulated pyramid wavefront sensor

[syhaffert]

This is the implementation of the faster modulated pwfs as mentioned in #112 . I have added a test to check the new method versus the old version and they agree quite well with each other. The maximum relative error is smaller than 2 percent, and the relative rms of the difference is ~0.2 percent.

[codecov]

Codecov Report

Merging #162 (d08b5ef) into master (058c473) will increase coverage by 1.41%.
The diff coverage is 89.60%.

@@            Coverage Diff             @@
##           master     #162      +/-   ##
==========================================
+ Coverage   79.57%   80.99%   +1.41%     
==========================================
  Files          94       95       +1     
  Lines        6503     6986     +483     
==========================================
+ Hits         5175     5658     +483     
  Misses       1328     1328              

Impacted Files	Coverage Δ
hcipy/aperture/__init__.py	100.00% <ø> (ø)
hcipy/optics/detector.py	72.46% <ø> (+0.82%)	⬆️
hcipy/plotting/field.py	80.00% <ø> (ø)
hcipy/optics/aberration.py	37.83% <50.00%> (ø)
hcipy/optics/fiber.py	67.30% <70.00%> (+2.13%)	⬆️
hcipy/coronagraphy/knife_edge.py	71.18% <71.42%> (+49.44%)	⬆️
hcipy/version.py	83.33% <81.81%> (+5.55%)	⬆️
hcipy/aperture/generic.py	89.43% <82.05%> (-3.23%)	⬇️
hcipy/field/coordinates.py	76.84% <92.85%> (+3.59%)	⬆️
hcipy/aperture/realistic.py	95.72% <94.16%> (-0.24%)	⬇️
... and 47 more

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more

[ehpor]

Just simple style/docstring changes, plus one clarification.

[ehpor]

I'll approve once the tests have passed.

[ehpor]

LGTM.