Fix deprecations and clean tests & CI

[devmotion]

No description provided.

[coveralls]

Pull Request Test Coverage Report for Build 1608904708

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

• 3 of 3 (100.0%) changed or added relevant lines in 1 file are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 97.006%

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Totals
Change from base Build 1607522899:	0.0%
Covered Lines:	162
Relevant Lines:	167

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💛 - Coveralls

[codecov-commenter]

Codecov Report

Merging #19 (c3f8b9d) into main (b1dba1c) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main      #19   +/-   ##
=======================================
  Coverage   97.00%   97.00%           
=======================================
  Files           4        4           
  Lines         167      167           
=======================================
  Hits          162      162           
  Misses          5        5           

Impacted Files	Coverage Δ
src/exact.jl	98.23% <100.00%> (ø)

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