Add optimization for discrete uniform distributions of equal size

[devmotion]

Adds an optimization in the case of discrete uniform distributions of the same size.

[coveralls]

Pull Request Test Coverage Report for Build 1604642274

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 26 of 26 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.2%) to 97.006%

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Totals
Change from base Build 1412842701:	0.2%
Covered Lines:	162
Relevant Lines:	167

---

💛 - Coveralls

[codecov-commenter]

Codecov Report

Merging #17 (b9c5402) into main (dcda744) will increase coverage by 0.17%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main      #17      +/-   ##
==========================================
+ Coverage   96.83%   97.00%   +0.17%     
==========================================
  Files           4        4              
  Lines         158      167       +9     
==========================================
+ Hits          153      162       +9     
  Misses          5        5              

Impacted Files	Coverage Δ
src/utils.jl	100.00% <ø> (ø)
src/exact.jl	98.23% <100.00%> (+0.11%)	⬆️
src/distances/bures.jl	90.00% <0.00%> (+0.34%)	⬆️

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[davibarreira]

Everything looks good to me.

[coveralls]

Pull Request Test Coverage Report for Build 1604615062

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 26 of 26 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.2%) to 97.006%

---

Totals
Change from base Build 1412842701:	0.2%
Covered Lines:	162
Relevant Lines:	167

---

💛 - Coveralls