Add tests using Infinity.jl

[fchorney]

Depends on cjdoris/Infinity.jl#16 and cjdoris/Infinity.jl#18 to be merged in.

This adds tests using Infinity.jl to confirm that it works with intervals.

[codecov]

Codecov Report

Merging #107 into master will decrease coverage by 0.16%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #107      +/-   ##
==========================================
- Coverage   74.39%   74.23%   -0.17%     
==========================================
  Files          10       10              
  Lines         457      458       +1     
==========================================
  Hits          340      340              
- Misses        117      118       +1     

Impacted Files	Coverage Δ
src/anchoredinterval.jl	96.15% <100.00%> (+0.04%)	⬆️
src/interval.jl	94.57% <0.00%> (-0.78%)	⬇️

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[omus]

Looks great. Let's hold off on merging until #104 is in and we'll go from there. Thanks for this :)

[omus]

I'll merge this today. I kind of want to tag it as a feature but since it only effects tests I could do it as a bugfix.

[omus]

Sorry this totally fell off my radar. I believe we may need some tests for AnchoredIntervals but I'll investigate that and push the necessary changes.

[omus]

During the course of completing this PR I noticed some additional work to be done to Infinity.jl:

• Add iszero(::Infinite) cjdoris/Infinity.jl#21
• Support parsing cjdoris/Infinity.jl#22

[omus]

The CI failures were hard to track down but it ended up being an issue in Infinity.jl: cjdoris/Infinity.jl#23. The issue has a fix cjdoris/Infinity.jl#24 but we'll require that fix to be merged and tagged before we can merge this change.

[omus]

Looks like we also need: cjdoris/Infinity.jl#30

[omus]

Finally going to be able to wrap this one up.