docs/utime: Describe new semantics of ticks_diff() (signed ring arithmetics).
docs/utime: Describe new semantics of ticks_diff() (signed ring arithmetics).

Peetz0r/micropython-esp32,SHA2017-badge/micropython-esp32,AriZuu/micropython,selste/micropython,henriknelson/micropython,tralamazza/micropython,alex-robbins/micropython,SHA2017-badge/micropython-esp32,toolmacher/micropython,tobbad/micropython,PappaPeppar/micropython,matthewelse/micropython,deshipu/micropython,micropython/micropython-esp32,blazewicz/micropython,matthewelse/micropython,ryannathans/micropython,AriZuu/micropython,infinnovation/micropython,mhoffma/micropython,hosaka/micropython,alex-march/micropython,selste/micropython,SHA2017-badge/micropython-esp32,pramasoul/micropython,AriZuu/micropython,blazewicz/micropython,mhoffma/micropython,henriknelson/micropython,kerneltask/micropython,hosaka/micropython,MrSurly/micropython-esp32,puuu/micropython,blazewicz/micropython,bvernoux/micropython,toolmacher/micropython,henriknelson/micropython,chrisdearman/micropython,deshipu/micropython,MrSurly/micropython,selste/micropython,adafruit/circuitpython,puuu/micropython,adafruit/circuitpython,pozetroninc/micropython,HenrikSolver/micropython,hosaka/micropython,MrSurly/micropython,kerneltask/micropython,lowRISC/micropython,torwag/micropython,pozetroninc/micropython,mhoffma/micropython,hiway/micropython,tuc-osg/micropython,Peetz0r/micropython-esp32,lowRISC/micropython,adafruit/micropython,micropython/micropython-esp32,pramasoul/micropython,tuc-osg/micropython,selste/micropython,adafruit/circuitpython,TDAbboud/micropython,PappaPeppar/micropython,cwyark/micropython,infinnovation/micropython,pozetroninc/micropython,hosaka/micropython,MrSurly/micropython-esp32,chrisdearman/micropython,jmarcelino/pycom-micropython,TDAbboud/micropython,lowRISC/micropython,dmazzella/micropython,kerneltask/micropython,jmarcelino/pycom-micropython,dmazzella/micropython,kerneltask/micropython,jmarcelino/pycom-micropython,pramasoul/micropython,AriZuu/micropython,ryannathans/micropython,blazewicz/micropython,swegener/micropython,tobbad/micropython,AriZuu/micropython,infinnovation/micropython,pfalcon/micropython,pramasoul/micropython,oopy/micropython,PappaPeppar/micropython,toolmacher/micropython,matthewelse/micropython,blazewicz/micropython,bvernoux/micropython,Timmenem/micropython,tobbad/micropython,trezor/micropython,matthewelse/micropython,mhoffma/micropython,swegener/micropython,HenrikSolver/micropython,hiway/micropython,puuu/micropython,micropython/micropython-esp32,matthewelse/micropython,pozetroninc/micropython,tralamazza/micropython,trezor/micropython,MrSurly/micropython-esp32,chrisdearman/micropython,deshipu/micropython,ryannathans/micropython,TDAbboud/micropython,HenrikSolver/micropython,infinnovation/micropython,SHA2017-badge/micropython-esp32,SHA2017-badge/micropython-esp32,alex-march/micropython,tuc-osg/micropython,swegener/micropython,dmazzella/micropython,tobbad/micropython,TDAbboud/micropython,pfalcon/micropython,hosaka/micropython,adafruit/circuitpython,pfalcon/micropython,oopy/micropython,cwyark/micropython,oopy/micropython,alex-robbins/micropython,Peetz0r/micropython-esp32,Peetz0r/micropython-esp32,bvernoux/micropython,ryannathans/micropython,Timmenem/micropython,lowRISC/micropython,alex-march/micropython,TDAbboud/micropython,selste/micropython,pozetroninc/micropython,deshipu/micropython,lowRISC/micropython,HenrikSolver/micropython,MrSurly/micropython-esp32,torwag/micropython,pfalcon/micropython,Timmenem/micropython,chrisdearman/micropython,matthewelse/micropython,Timmenem/micropython,MrSurly/micropython-esp32,pramasoul/micropython,adafruit/micropython,pfalcon/micropython,Peetz0r/micropython-esp32,oopy/micropython,MrSurly/micropython,tralamazza/micropython,micropython/micropython-esp32,ryannathans/micropython,MrSurly/micropython,kerneltask/micropython,Timmenem/micropython,bvernoux/micropython,HenrikSolver/micropython,trezor/micropython,toolmacher/micropython,swegener/micropython,PappaPeppar/micropython,tuc-osg/micropython,puuu/micropython,bvernoux/micropython,adafruit/circuitpython,swegener/micropython,henriknelson/micropython,hiway/micropython,tobbad/micropython,adafruit/micropython,henriknelson/micropython,cwyark/micropython,adafruit/circuitpython,hiway/micropython,adafruit/micropython,alex-robbins/micropython,dmazzella/micropython,micropython/micropython-esp32,torwag/micropython,chrisdearman/micropython,toolmacher/micropython,alex-march/micropython,adafruit/micropython,puuu/micropython,tralamazza/micropython,PappaPeppar/micropython,trezor/micropython,trezor/micropython,alex-march/micropython,tuc-osg/micropython,jmarcelino/pycom-micropython,deshipu/micropython,alex-robbins/micropython,MrSurly/micropython,torwag/micropython,infinnovation/micropython,cwyark/micropython,alex-robbins/micropython,cwyark/micropython,oopy/micropython,torwag/micropython,jmarcelino/pycom-micropython,hiway/micropython,mhoffma/micropython