merge branch 0.19.x
merge branch 0.19.x

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