Normalize Acceptance Rate Plot by ESS

[yannikschaelte]

Fixes #202

For details see #345. PR by @Havaldar.

[codecov-commenter]

Codecov Report

Merging #346 into develop will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff            @@
##           develop     #346   +/-   ##
========================================
  Coverage    83.59%   83.59%           
========================================
  Files           87       87           
  Lines         5010     5017    +7     
========================================
+ Hits          4188     4194    +6     
- Misses         822      823    +1     

Impacted Files	Coverage Δ
pyabc/visualization/sample.py	100.00% <100.00%> (ø)
pyabc/sampler/mapping.py	94.87% <0.00%> (-2.57%)	⬇️
pyabc/weighted_statistics.py	91.22% <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 283085c...ba33126. Read the comment docs.