Add benchmark which tests faults far away.

[MFraters]

This adds a fault benchmark which also should be able to capture any performance improvements by pull request #264. This is done by having one fault in the region of interest and two outside the region of interest.

[codecov]

Codecov Report

Merging #266 (d1c5266) into master (b3eabfb) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #266   +/-   ##
=======================================
  Coverage   98.45%   98.45%           
=======================================
  Files          74       74           
  Lines        4397     4397           
=======================================
  Hits         4329     4329           
  Misses         68       68           

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[coveralls]

Pull Request Test Coverage Report for Build 940426544

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 98.535%

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Totals
Change from base Build 932025341:	0.0%
Covered Lines:	4573
Relevant Lines:	4641

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💛 - Coveralls

[github-actions]

Benchmark	Master	Feature	Difference (99.9% CI)
Slab interpolation simple none	2.981 ± 0.034 (s=157)	2.981 ± 0.040 (s=147)	-0.4% .. +0.5%
Slab interpolation curved simple none	2.935 ± 0.045 (s=160)	2.929 ± 0.043 (s=149)	-0.8% .. +0.4%
Spherical slab interpolation simple none	3.150 ± 0.047 (s=140)	3.147 ± 0.041 (s=148)	-0.7% .. +0.4%
Slab interpolation simple curved CMS	3.733 ± 0.131 (s=115)	3.745 ± 0.124 (s=128)	-1.1% .. +1.8%
Spherical slab interpolation simple CMS	7.355 ± 0.055 (s=64)	7.358 ± 0.058 (s=61)	-0.4% .. +0.5%

[MFraters]

I also added the two extra slabs outside the box for the Spherical slab interpolation simple CMS. This has doubled the benchmark time, so I hope #264 brings it back :)