py: implement POP_BLOCK in VM.
py: implement POP_BLOCK in VM.

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