Remove @intervalbox macro

[dpsanders]

I think we should include this in 0.9.1, @lbenet.

[coveralls]

Coverage increased (+0.1%) to 92.5% when pulling a611629 on remove_intervalbox_macro into 64f72c7 on master.

[codecov-io]

Codecov Report

Merging #33 into master will increase coverage by 0.1%.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           master     #33     +/-   ##
========================================
+ Coverage   92.39%   92.5%   +0.1%     
========================================
  Files          22      21      -1     
  Lines         921     920      -1     
========================================
  Hits          851     851             
+ Misses         70      69      -1

Impacted Files	Coverage Δ
src/IntervalArithmetic.jl	100% <ø> (ø)	⬆️

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[lbenet]

This could be merged right away, but I think we should merge first JuliaIntervals/IntervalRootFinding.jl#8, which requires some tests and docstrings, and then this one.

[dpsanders]

I'm actually not sure that the @intervalbox macro is that useful / necessary if all the other functions are written in the correct way.

[lbenet]

Then, I'll merge this, and we keep the discussion about having or not @intervalbox in JuliaIntervals/IntervalRootFinding.jl#8

[lbenet]

Thanks, by the way!

[dpsanders]

OK, great, thanks!