section on surrogate pairs and narrow CPython builds, some fixes based on type inference
section on surrogate pairs and narrow CPython builds, some fixes based on type inference

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