Gamma measure

[gdalle]

Hey @cscherrer Here's the implementation of the Gamma measure based on the version from Distributions.jl, with both standard parametrizations from Wikipedia.

[github-actions[bot]]

Package name	latest	stable
Mitosis.jl
Soss.jl

[cscherrer]

Thanks @gdalle . This is looking good, I think we just need a few more functions and some tests.

Weirdly, tests here are failing, for code that passed before, passes locally for me, and is completely outside your changes. I don't think there's anything for you to do about that, but I'll need to figure out what's going on.

EDIT: I figured it out! A test was incorrectly passing before I fixed some things in the last MeasureBase. I'll change it so it passes again.

[codecov[bot]]

Codecov Report

Merging #153 (0afa05c) into master (3928dfb) will decrease coverage by 0.53%. The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master     #153      +/-   ##
==========================================
- Coverage   33.81%   33.27%   -0.54%     
==========================================
  Files          29       30       +1     
  Lines         556      565       +9     
==========================================
  Hits          188      188              
- Misses        368      377       +9     

Impacted Files	Coverage Δ
src/MeasureTheory.jl	50.00% <ø> (ø)
src/parameterized/gamma.jl	0.00% <0.00%> (ø)

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[github-actions[bot]]

Package name	latest	stable
Mitosis.jl
Soss.jl

[gdalle]

What kind of additional functions did you have in mind?

[cscherrer]

Sorry that was vague, the failing tests had me pretty distracted. Offhand I didn't see a method for testvalue. We'll also need some tests. Could you add some similar to other parameterized measures? These are in test/runtests.jl. In general we really need to improve our test coverage.

Thanks again for your work on this :)