fix for frame_deconvolution

[IainHammond]

The best time to submit a pull request is before a new release; the second best time is right after.

A colleague at MPIA wanted to use the frame_deconvolution function in VIP but found it broken. I think it's been a while since it got some love. This was a matter of updating the num_iter variable which got renamed a long time ago in skimage, and also opening up the clip parameter. Hopefully everything is clean and documented nicely now.

Enjoy!

[codecov-commenter]

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Codecov Report

❌ Patch coverage is 12.50000% with 7 lines in your changes missing coverage. Please review.
✅ Project coverage is 50.23%. Comparing base (67137a0) to head (510e7f3).
⚠️ Report is 67 commits behind head on master.

Files with missing lines	Patch %	Lines
src/vip_hci/var/filters.py	12.50%	7 Missing ⚠️
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Additional details and impacted files

@@            Coverage Diff             @@
##           master     #724      +/-   ##
==========================================
- Coverage   50.32%   50.23%   -0.10%     
==========================================
  Files          88       88              
  Lines       17058    17089      +31     
==========================================
- Hits         8585     8584       -1     
- Misses       8473     8505      +32     

Flag	Coverage Δ
no_objects	49.05% <12.50%> (?)
objects	60.43% <ø> (?)

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[VChristiaens]

Thanks @IainHammond !