add check on fundamental limitations

[baggepinnen]

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[JuliaControlBot]

This is an automated message.
Plots were compared to references. 8/11 images have changed, see differences below.
After pulling this PR, please update the reference images by creating a PR to ControlExamplePlots.jl here.

Difference	Reference Image	New Image
❌ 0.048
✔️ 0.0
✔️ 0.001
✔️ 0.001
✔️ 0.0
❌ 0.043
❌ 0.059
✔️ 0.01

[codecov]

Codecov Report

Merging #699 (b546d96) into master (3a92ba8) will decrease coverage by 0.80%.
The diff coverage is 0.00%.

❗ Current head b546d96 differs from pull request most recent head 8fb54e6. Consider uploading reports for the commit 8fb54e6 to get more accurate results

@@            Coverage Diff             @@
##           master     #699      +/-   ##
==========================================
- Coverage   87.58%   86.79%   -0.80%     
==========================================
  Files          35       35              
  Lines        3601     3634      +33     
==========================================
  Hits         3154     3154              
- Misses        447      480      +33     

Impacted Files	Coverage Δ
src/analysis.jl	80.42% <0.00%> (-8.88%)	⬇️