Add a median check

[tmigot]

It doesn't really work now, as the solver is slower than its stopping wrapper...

[codecov]

Codecov Report

Merging #18 (6e16230) into main (fbc9293) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main      #18   +/-   ##
=======================================
  Coverage   68.75%   68.75%           
=======================================
  Files           4        4           
  Lines          80       80           
=======================================
  Hits           55       55           
  Misses         25       25           

Impacted Files	Coverage Δ
src/stopping_to_jsosolvers.jl	86.66% <0.00%> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update fbc9293...6e16230. Read the comment docs.