merge branch 0.19.x
merge branch 0.19.x

fperez/cython,dahebolangkuan/cython,c-blake/cython,hickford/cython,da-woods/cython,c-blake/cython,slonik-az/cython,slonik-az/cython,roxyboy/cython,hickford/cython,mcanthony/cython,achernet/cython,hhsprings/cython,fabianrost84/cython,hhsprings/cython,mcanthony/cython,encukou/cython,fabianrost84/cython,ABcDexter/cython,madjar/cython,acrispin/cython,madjar/cython,encukou/cython,acrispin/cython,fabianrost84/cython,scoder/cython,madjar/cython,roxyboy/cython,andreasvc/cython,scoder/cython,roxyboy/cython,marscher/cython,achernet/cython,cython/cython,dahebolangkuan/cython,andreasvc/cython,andreasvc/cython,mcanthony/cython,encukou/cython,mrGeen/cython,acrispin/cython,andreasvc/cython,acrispin/cython,slonik-az/cython,acrispin/cython,dahebolangkuan/cython,marscher/cython,ABcDexter/cython,da-woods/cython,hickford/cython,hhsprings/cython,marscher/cython,JelleZijlstra/cython,marscher/cython,scoder/cython,ABcDexter/cython,dahebolangkuan/cython,c-blake/cython,JelleZijlstra/cython,fperez/cython,cython/cython,mrGeen/cython,JelleZijlstra/cython,marscher/cython,fabianrost84/cython,ABcDexter/cython,ABcDexter/cython,cython/cython,scoder/cython,encukou/cython,achernet/cython,slonik-az/cython,ChristopherHogan/cython,andreasvc/cython,dahebolangkuan/cython,madjar/cython,cython/cython,fabianrost84/cython,fperez/cython,encukou/cython,madjar/cython,c-blake/cython,slonik-az/cython,roxyboy/cython,fperez/cython,c-blake/cython,mcanthony/cython,JelleZijlstra/cython,da-woods/cython,mrGeen/cython,hickford/cython,fperez/cython,mrGeen/cython,achernet/cython,da-woods/cython,mrGeen/cython,hickford/cython,roxyboy/cython,hhsprings/cython,achernet/cython,JelleZijlstra/cython,ChristopherHogan/cython,hhsprings/cython,mcanthony/cython,ChristopherHogan/cython