Duffy based integration for simplices

[fverdugo]

No description provided.

[codecov-io]

Codecov Report

Merging #61 into master will increase coverage by 0.13%.
The diff coverage is 96.82%.

@@            Coverage Diff             @@
##           master      #61      +/-   ##
==========================================
+ Coverage   89.39%   89.52%   +0.13%     
==========================================
  Files          74       76       +2     
  Lines        3233     3293      +60     
==========================================
+ Hits         2890     2948      +58     
- Misses        343      345       +2

Impacted Files	Coverage Δ
src/Integration/Quadratures.jl	93.93% <ø> (-0.51%)	⬇️
src/Integration/QuadratureFactories.jl	83.33% <83.33%> (ø)
src/Integration/DuffyQuadratures.jl	98.24% <98.24%> (ø)

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