Merge branch 'feature_mkl_default' into 'master'

Distribute MKL-enabled builds by default

See merge request lscsoft/conda!32
2 jobs for master in 57 minutes and 45 seconds (queued for 3 seconds)
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Status Job ID Name Coverage
  Test
passed #311694
macos_highsierra
test-macos

00:20:30

 
  Build
passed #311695
build-latest

00:37:15