Merge branch 'pytest' into 'master'

Replace nose with pytest

See merge request !108
5 jobs for master in 38 minutes and 12 seconds (queued for 1 second)
Status Name Job ID Coverage
  Build
passed build_linux_37 #227573
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passed build_linux_38 #227574
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passed build_macos_intel_37 #227571
macos intel

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passed build_macos_intel_38 #227572
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  Deploy
passed deploy_beta #227575
docker

00:00:51