use oneunit(T) in construct_seeds

[longemen3000]

replaces #652 , fixes #651

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.46%. Comparing base (2ff6808) to head (a897f71).
Report is 14 commits behind head on release-0.10.

Additional details and impacted files

@@               Coverage Diff                @@
##           release-0.10     #659      +/-   ##
================================================
- Coverage         89.59%   86.46%   -3.13%     
================================================
  Files                11       10       -1     
  Lines               961      894      -67     
================================================
- Hits                861      773      -88     
- Misses              100      121      +21     

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[longemen3000]

The error in Julia latest seems unrelated?

[longemen3000]

bump?

[RomeoV]

Could use a rebase onto master. That makes the errors go away for me.

[longemen3000]

superseded by #750