Add warning that soft sweeps are currently not possible.

[molpopgen]

No description provided.

[codecov]

Codecov Report

Merging #1955 (bfb63b9) into main (ea2cdd5) will decrease coverage by 0.00%.
The diff coverage is n/a.

❗ Current head bfb63b9 differs from pull request most recent head 38dc003. Consider uploading reports for the commit 38dc003 to get more accurate results

@@            Coverage Diff             @@
##             main    #1955      +/-   ##
==========================================
- Coverage   91.16%   91.16%   -0.01%     
==========================================
  Files          20       20              
  Lines       10664    10661       -3     
  Branches     2205     2204       -1     
==========================================
- Hits         9722     9719       -3     
  Misses        516      516              
  Partials      426      426              

Flag	Coverage Δ
C	91.16% <ø> (-0.01%)	⬇️
python	98.75% <ø> (-0.01%)	⬇️

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Impacted Files	Coverage Δ
msprime/ancestry.py	99.08% <ø> (ø)
msprime/demography.py	99.31% <0.00%> (-0.01%)	⬇️

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[jeromekelleher]

LGTM, thanks @molpopgen - I've just stuck it in a warning block for emphasis

[jeromekelleher]

Thanks @molpopgen - I just tweaked and forced pushed (in case you're trying to pull from the branch). Merging.