modffi: Support void (None) return value for Python callback functions.
modffi: Support void (None) return value for Python callback functions.

pramasoul/micropython,oopy/micropython,selste/micropython,suda/micropython,jlillest/micropython,mhoffma/micropython,warner83/micropython,mgyenik/micropython,danicampora/micropython,martinribelotta/micropython,omtinez/micropython,EcmaXp/micropython,paul-xxx/micropython,ericsnowcurrently/micropython,pozetroninc/micropython,pozetroninc/micropython,dhylands/micropython,puuu/micropython,chrisdearman/micropython,ruffy91/micropython,ahotam/micropython,HenrikSolver/micropython,neilh10/micropython,PappaPeppar/micropython,matthewelse/micropython,paul-xxx/micropython,hiway/micropython,ryannathans/micropython,Peetz0r/micropython-esp32,utopiaprince/micropython,chrisdearman/micropython,skybird6672/micropython,blmorris/micropython,ahotam/micropython,chrisdearman/micropython,jimkmc/micropython,supergis/micropython,tdautc19841202/micropython,firstval/micropython,supergis/micropython,EcmaXp/micropython,adafruit/micropython,hiway/micropython,lowRISC/micropython,mhoffma/micropython,turbinenreiter/micropython,adamkh/micropython,lbattraw/micropython,toolmacher/micropython,Timmenem/micropython,praemdonck/micropython,xyb/micropython,swegener/micropython,HenrikSolver/micropython,torwag/micropython,SHA2017-badge/micropython-esp32,tobbad/micropython,hiway/micropython,deshipu/micropython,mpalomer/micropython,Peetz0r/micropython-esp32,cnoviello/micropython,ericsnowcurrently/micropython,henriknelson/micropython,SungEun-Steve-Kim/test-mp,noahwilliamsson/micropython,dmazzella/micropython,utopiaprince/micropython,blmorris/micropython,tobbad/micropython,ganshun666/micropython,tralamazza/micropython,Vogtinator/micropython,dinau/micropython,xuxiaoxin/micropython,PappaPeppar/micropython,lbattraw/micropython,mgyenik/micropython,dhylands/micropython,kerneltask/micropython,cwyark/micropython,deshipu/micropython,ernesto-g/micropython,pfalcon/micropython,Peetz0r/micropython-esp32,redbear/micropython,praemdonck/micropython,suda/micropython,pramasoul/micropython,tdautc19841202/micropython,blazewicz/micropython,tobbad/micropython,AriZuu/micropython,ericsnowcurrently/micropython,TDAbboud/micropython,turbinenreiter/micropython,vriera/micropython,galenhz/micropython,tralamazza/micropython,ryannathans/micropython,mgyenik/micropython,oopy/micropython,lbattraw/micropython,matthewelse/micropython,selste/micropython,torwag/micropython,aethaniel/micropython,martinribelotta/micropython,rubencabrera/micropython,MrSurly/micropython,puuu/micropython,Timmenem/micropython,blazewicz/micropython,noahwilliamsson/micropython,AriZuu/micropython,galenhz/micropython,deshipu/micropython,pfalcon/micropython,kerneltask/micropython,drrk/micropython,alex-march/micropython,stonegithubs/micropython,ganshun666/micropython,dxxb/micropython,adafruit/circuitpython,jlillest/micropython,skybird6672/micropython,infinnovation/micropython,jmarcelino/pycom-micropython,dxxb/micropython,noahchense/micropython,redbear/micropython,ahotam/micropython,ChuckM/micropython,ceramos/micropython,drrk/micropython,adafruit/micropython,KISSMonX/micropython,emfcamp/micropython,aethaniel/micropython,EcmaXp/micropython,lowRISC/micropython,xuxiaoxin/micropython,SungEun-Steve-Kim/test-mp,jlillest/micropython,kostyll/micropython,xhat/micropython,pfalcon/micropython,slzatz/micropython,trezor/micropython,supergis/micropython,MrSurly/micropython-esp32,toolmacher/micropython,ChuckM/micropython,TDAbboud/micropython,utopiaprince/micropython,toolmacher/micropython,misterdanb/micropython,pozetroninc/micropython,hosaka/micropython,emfcamp/micropython,mpalomer/micropython,emfcamp/micropython,matthewelse/micropython,xyb/micropython,cwyark/micropython,orionrobots/micropython,slzatz/micropython,feilongfl/micropython,cnoviello/micropython,utopiaprince/micropython,adafruit/circuitpython,SungEun-Steve-Kim/test-mp,HenrikSolver/micropython,drrk/micropython,redbear/micropython,neilh10/micropython,dmazzella/micropython,kostyll/micropython,heisewangluo/micropython,mhoffma/micropython,micropython/micropython-esp32,dxxb/micropython,ericsnowcurrently/micropython,vriera/micropython,drrk/micropython,AriZuu/micropython,pfalcon/micropython,noahchense/micropython,blazewicz/micropython,misterdanb/micropython,lbattraw/micropython,alex-robbins/micropython,vitiral/micropython,Peetz0r/micropython-esp32,mgyenik/micropython,ryannathans/micropython,MrSurly/micropython-esp32,emfcamp/micropython,danicampora/micropython,heisewangluo/micropython,Peetz0r/micropython-esp32,mhoffma/micropython,dhylands/micropython,oopy/micropython,trezor/micropython,adafruit/micropython,kostyll/micropython,AriZuu/micropython,pozetroninc/micropython,jimkmc/micropython,matthewelse/micropython,orionrobots/micropython,cloudformdesign/micropython,ahotam/micropython,paul-xxx/micropython,neilh10/micropython,tralamazza/micropython,Vogtinator/micropython,tuc-osg/micropython,ganshun666/micropython,adafruit/micropython,KISSMonX/micropython,mpalomer/micropython,SungEun-Steve-Kim/test-mp,ganshun666/micropython,omtinez/micropython,alex-march/micropython,Timmenem/micropython,praemdonck/micropython,blazewicz/micropython,martinribelotta/micropython,warner83/micropython,swegener/micropython,blmorris/micropython,slzatz/micropython,kerneltask/micropython,blmorris/micropython,xyb/micropython,cloudformdesign/micropython,alex-robbins/micropython,KISSMonX/micropython,matthewelse/micropython,warner83/micropython,ChuckM/micropython,heisewangluo/micropython,orionrobots/micropython,trezor/micropython,dinau/micropython,dmazzella/micropython,hosaka/micropython,swegener/micropython,bvernoux/micropython,lowRISC/micropython,tuc-osg/micropython,toolmacher/micropython,SHA2017-badge/micropython-esp32,henriknelson/micropython,jimkmc/micropython,vitiral/micropython,chrisdearman/micropython,martinribelotta/micropython,noahwilliamsson/micropython,cwyark/micropython,turbinenreiter/micropython,cloudformdesign/micropython,ryannathans/micropython,bvernoux/micropython,MrSurly/micropython-esp32,lowRISC/micropython,tdautc19841202/micropython,dinau/micropython,stonegithubs/micropython,stonegithubs/micropython,pramasoul/micropython,matthewelse/micropython,ganshun666/micropython,galenhz/micropython,turbinenreiter/micropython,skybird6672/micropython,misterdanb/micropython,noahchense/micropython,torwag/micropython,ceramos/micropython,PappaPeppar/micropython,vriera/micropython,xhat/micropython,mhoffma/micropython,tuc-osg/micropython,jlillest/micropython,turbinenreiter/micropython,vriera/micropython,hosaka/micropython,dhylands/micropython,dxxb/micropython,supergis/micropython,jlillest/micropython,ernesto-g/micropython,tobbad/micropython,slzatz/micropython,ruffy91/micropython,orionrobots/micropython,dxxb/micropython,supergis/micropython,torwag/micropython,KISSMonX/micropython,vitiral/micropython,henriknelson/micropython,micropython/micropython-esp32,dhylands/micropython,firstval/micropython,jimkmc/micropython,alex-robbins/micropython,SungEun-Steve-Kim/test-mp,mianos/micropython,xhat/micropython,pfalcon/micropython,hosaka/micropython,cnoviello/micropython,micropython/micropython-esp32,ernesto-g/micropython,SHA2017-badge/micropython-esp32,ceramos/micropython,MrSurly/micropython-esp32,xyb/micropython,paul-xxx/micropython,puuu/micropython,HenrikSolver/micropython,skybird6672/micropython,galenhz/micropython,neilh10/micropython,tuc-osg/micropython,rubencabrera/micropython,toolmacher/micropython,ruffy91/micropython,xyb/micropython,jmarcelino/pycom-micropython,adamkh/micropython,danicampora/micropython,firstval/micropython,tdautc19841202/micropython,vitiral/micropython,adamkh/micropython,noahchense/micropython,henriknelson/micropython,rubencabrera/micropython,MrSurly/micropython,selste/micropython,omtinez/micropython,cwyark/micropython,paul-xxx/micropython,xuxiaoxin/micropython,pozetroninc/micropython,warner83/micropython,redbear/micropython,orionrobots/micropython,kerneltask/micropython,emfcamp/micropython,ericsnowcurrently/micropython,ernesto-g/micropython,stonegithubs/micropython,noahwilliamsson/micropython,ceramos/micropython,skybird6672/micropython,PappaPeppar/micropython,feilongfl/micropython,tobbad/micropython,pramasoul/micropython,deshipu/micropython,galenhz/micropython,adamkh/micropython,Timmenem/micropython,mpalomer/micropython,Timmenem/micropython,jmarcelino/pycom-micropython,oopy/micropython,aethaniel/micropython,tralamazza/micropython,puuu/micropython,tdautc19841202/micropython,cloudformdesign/micropython,adafruit/circuitpython,hiway/micropython,EcmaXp/micropython,EcmaXp/micropython,feilongfl/micropython,alex-march/micropython,blmorris/micropython,cwyark/micropython,kostyll/micropython,rubencabrera/micropython,deshipu/micropython,vitiral/micropython,selste/micropython,lbattraw/micropython,praemdonck/micropython,micropython/micropython-esp32,dinau/micropython,tuc-osg/micropython,noahchense/micropython,pramasoul/micropython,alex-march/micropython,Vogtinator/micropython,henriknelson/micropython,jimkmc/micropython,omtinez/micropython,ryannathans/micropython,oopy/micropython,suda/micropython,slzatz/micropython,xhat/micropython,AriZuu/micropython,suda/micropython,adafruit/micropython,SHA2017-badge/micropython-esp32,ceramos/micropython,torwag/micropython,trezor/micropython,Vogtinator/micropython,infinnovation/micropython,bvernoux/micropython,bvernoux/micropython,stonegithubs/micropython,HenrikSolver/micropython,lowRISC/micropython,aethaniel/micropython,xuxiaoxin/micropython,hosaka/micropython,noahwilliamsson/micropython,TDAbboud/micropython,mgyenik/micropython,xuxiaoxin/micropython,neilh10/micropython,ChuckM/micropython,feilongfl/micropython,ruffy91/micropython,mianos/micropython,hiway/micropython,trezor/micropython,misterdanb/micropython,MrSurly/micropython-esp32,mianos/micropython,swegener/micropython,selste/micropython,feilongfl/micropython,dmazzella/micropython,warner83/micropython,heisewangluo/micropython,mianos/micropython,cnoviello/micropython,KISSMonX/micropython,martinribelotta/micropython,cloudformdesign/micropython,Vogtinator/micropython,MrSurly/micropython,mpalomer/micropython,vriera/micropython,aethaniel/micropython,ahotam/micropython,PappaPeppar/micropython,blazewicz/micropython,ernesto-g/micropython,suda/micropython,chrisdearman/micropython,infinnovation/micropython,infinnovation/micropython,danicampora/micropython,utopiaprince/micropython,alex-robbins/micropython,heisewangluo/micropython,kerneltask/micropython,MrSurly/micropython,praemdonck/micropython,redbear/micropython,alex-march/micropython,firstval/micropython,jmarcelino/pycom-micropython,infinnovation/micropython,adamkh/micropython,adafruit/circuitpython,TDAbboud/micropython,alex-robbins/micropython,cnoviello/micropython,mianos/micropython,ruffy91/micropython,rubencabrera/micropython,MrSurly/micropython,adafruit/circuitpython,xhat/micropython,misterdanb/micropython,danicampora/micropython,puuu/micropython,adafruit/circuitpython,firstval/micropython,SHA2017-badge/micropython-esp32,kostyll/micropython,TDAbboud/micropython,jmarcelino/pycom-micropython,micropython/micropython-esp32,dinau/micropython,omtinez/micropython,swegener/micropython,drrk/micropython,bvernoux/micropython,ChuckM/micropython