Merge branch 'improve-ptemcee' into 'master'

Improve ptemcee

See merge request !750
6 jobs for master
Status Job ID Name Coverage
  Test
canceled basic-3.7 #740467

canceled python-3.6 #740469

canceled python-3.6-samplers #740471

canceled python-3.7 #740468

canceled python-3.7-samplers #740470

 
  Deploy
canceled pages #740472