modstruct: Add 'O' typecode for passing mp_obj_t.
modstruct: Add 'O' typecode for passing mp_obj_t.

Useful as callback data, etc.

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