This adds 'hh' and 'hpp' as valid sketch files. For completeness a sketch should allow the same extensions as a library. These missing sketch extensions have already been enabled for libraries in #3186.
This adds 'hh' and 'hpp' as valid sketch files.
For completeness a sketch should allow the same extensions as a
library. These missing sketch extensions have already been enabled for
libraries in #3186.

cscenter/Arduino,tbowmo/Arduino,henningpohl/Arduino,zaiexx/Arduino,ricklon/Arduino,PaoloP74/Arduino,ikbelkirasan/Arduino,vbextreme/Arduino,HCastano/Arduino,jamesrob4/Arduino,nandojve/Arduino,cscenter/Arduino,Gourav2906/Arduino,shannonshsu/Arduino,byran/Arduino,pdNor/Arduino,ikbelkirasan/Arduino,ThoughtWorksIoTGurgaon/Arduino,Gourav2906/Arduino,chaveiro/Arduino,tomkrus007/Arduino,HCastano/Arduino,wilhelmryan/Arduino,tommyli2014/Arduino,Gourav2906/Arduino,zederson/Arduino,bsmr-arduino/Arduino,ForestNymph/Arduino_sources,bigjosh/Arduino,vbextreme/Arduino,Gourav2906/Arduino,ikbelkirasan/Arduino,arunkuttiyara/Arduino,superboonie/Arduino,ccoenen/Arduino,stickbreaker/Arduino,steamboating/Arduino,jaimemaretoli/Arduino,bigjosh/Arduino,vbextreme/Arduino,jabezGit/Arduino,bsmr-arduino/Arduino,garci66/Arduino,tomkrus007/Arduino,stickbreaker/Arduino,ricklon/Arduino,eggfly/arduino,xxxajk/Arduino-1,HCastano/Arduino,tommyli2014/Arduino,bsmr-arduino/Arduino,lukeWal/Arduino,nandojve/Arduino,stevemayhew/Arduino,tbowmo/Arduino,tskurauskas/Arduino,chaveiro/Arduino,jaimemaretoli/Arduino,eduardocasarin/Arduino,PaoloP74/Arduino,henningpohl/Arduino,majenkotech/Arduino,tbowmo/Arduino,bsmr-arduino/Arduino,steamboating/Arduino,eddyst/Arduino-SourceCode,gberl001/Arduino,lulufei/Arduino,stickbreaker/Arduino,tommyli2014/Arduino,jamesrob4/Arduino,PaoloP74/Arduino,talhaburak/Arduino,andyvand/Arduino-1,ogferreiro/Arduino,steamboating/Arduino,steamboating/Arduino,Chris--A/Arduino,henningpohl/Arduino,arunkuttiyara/Arduino,cscenter/Arduino,adamkh/Arduino,eddyst/Arduino-SourceCode,majenkotech/Arduino,ikbelkirasan/Arduino,ForestNymph/Arduino_sources,arunkuttiyara/Arduino,ari-analytics/Arduino,ntruchsess/Arduino-1,kidswong999/Arduino,niggor/Arduino_cc,tomkrus007/Arduino,adamkh/Arduino,ogferreiro/Arduino,ogferreiro/Arduino,arunkuttiyara/Arduino,wayoda/Arduino,acosinwork/Arduino,ThoughtWorksIoTGurgaon/Arduino,nandojve/Arduino,wilhelmryan/Arduino,shannonshsu/Arduino,garci66/Arduino,KlaasDeNys/Arduino,Gourav2906/Arduino,tomkrus007/Arduino,bigjosh/Arduino,wayoda/Arduino,HCastano/Arduino,snargledorf/Arduino,bsmr-arduino/Arduino,lukeWal/Arduino,byran/Arduino,snargledorf/Arduino,kidswong999/Arduino,NicoHood/Arduino,xxxajk/Arduino-1,niggor/Arduino_cc,wilhelmryan/Arduino,ogferreiro/Arduino,jamesrob4/Arduino,byran/Arduino,byran/Arduino,niggor/Arduino_cc,NaSymbol/Arduino,andyvand/Arduino-1,talhaburak/Arduino,lukeWal/Arduino,jabezGit/Arduino,tommyli2014/Arduino,ogferreiro/Arduino,stevemayhew/Arduino,nandojve/Arduino,ari-analytics/Arduino,eduardocasarin/Arduino,niggor/Arduino_cc,nandojve/Arduino,arunkuttiyara/Arduino,me-no-dev/Arduino-1,ntruchsess/Arduino-1,zaiexx/Arduino,kidswong999/Arduino,gestrem/Arduino,gestrem/Arduino,KlaasDeNys/Arduino,gestrem/Arduino,NicoHood/Arduino,wayoda/Arduino,zaiexx/Arduino,majenkotech/Arduino,tbowmo/Arduino,kidswong999/Arduino,chaveiro/Arduino,me-no-dev/Arduino-1,ForestNymph/Arduino_sources,onovy/Arduino,gberl001/Arduino,eddyst/Arduino-SourceCode,ccoenen/Arduino,cscenter/Arduino,zederson/Arduino,ashwin713/Arduino,bigjosh/Arduino,ashwin713/Arduino,byran/Arduino,wayoda/Arduino,niggor/Arduino_cc,eggfly/arduino,jmgonzalez00449/Arduino,wayoda/Arduino,onovy/Arduino,eddyst/Arduino-SourceCode,me-no-dev/Arduino-1,Chris--A/Arduino,bsmr-arduino/Arduino,tskurauskas/Arduino,ntruchsess/Arduino-1,jaimemaretoli/Arduino,PeterVH/Arduino,gestrem/Arduino,jabezGit/Arduino,byran/Arduino,lukeWal/Arduino,wayoda/Arduino,NicoHood/Arduino,me-no-dev/Arduino-1,jamesrob4/Arduino,gberl001/Arduino,stevemayhew/Arduino,karlitxo/Arduino,Chris--A/Arduino,xxxajk/Arduino-1,ccoenen/Arduino,tskurauskas/Arduino,tskurauskas/Arduino,stevemayhew/Arduino,PaoloP74/Arduino,acosinwork/Arduino,garci66/Arduino,acosinwork/Arduino,onovy/Arduino,nandojve/Arduino,adamkh/Arduino,eddyst/Arduino-SourceCode,lulufei/Arduino,karlitxo/Arduino,ThoughtWorksIoTGurgaon/Arduino,acosinwork/Arduino,garci66/Arduino,NicoHood/Arduino,wilhelmryan/Arduino,zaiexx/Arduino,lukeWal/Arduino,ntruchsess/Arduino-1,laylthe/Arduino,NicoHood/Arduino,byran/Arduino,ThoughtWorksIoTGurgaon/Arduino,snargledorf/Arduino,ari-analytics/Arduino,garci66/Arduino,majenkotech/Arduino,me-no-dev/Arduino-1,tomkrus007/Arduino,jabezGit/Arduino,stickbreaker/Arduino,PeterVH/Arduino,superboonie/Arduino,majenkotech/Arduino,bsmr-arduino/Arduino,gberl001/Arduino,steamboating/Arduino,xxxajk/Arduino-1,zaiexx/Arduino,ashwin713/Arduino,garci66/Arduino,eggfly/arduino,PeterVH/Arduino,zederson/Arduino,HCastano/Arduino,PaoloP74/Arduino,PeterVH/Arduino,gberl001/Arduino,acosinwork/Arduino,KlaasDeNys/Arduino,onovy/Arduino,tbowmo/Arduino,majenkotech/Arduino,superboonie/Arduino,lulufei/Arduino,kidswong999/Arduino,tskurauskas/Arduino,eddyst/Arduino-SourceCode,ogferreiro/Arduino,ari-analytics/Arduino,shannonshsu/Arduino,talhaburak/Arduino,byran/Arduino,tomkrus007/Arduino,Chris--A/Arduino,superboonie/Arduino,wayoda/Arduino,ntruchsess/Arduino-1,jaimemaretoli/Arduino,jmgonzalez00449/Arduino,eddyst/Arduino-SourceCode,ccoenen/Arduino,ricklon/Arduino,talhabu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