Add monoid instance for EnvOverride
Add monoid instance for EnvOverride

GaloisInc/stack,achernyak/stack,agrafix/stack,phadej/stack,juhp/stack,rrnewton/stack,mathhun/stack,supermario/stack,cabrera/stack,Andrew-the-Ubergeek/stack,CRogers/stack,AndreasPK/stack,MichielDerhaeg/stack,martin-kolinek/stack,duplode/stack,supermario/stack,sjakobi/stack,DanielG/stack,harendra-kumar/stack,Denommus/stack,bixuanzju/stack,cabrera/stack,robstewart57/stack,luigy/stack,anton-dessiatov/stack,rubik/stack,joozek78/stack,bollu/stack,joozek78/stack,chreekat/stack,juhp/stack,fizruk/stack,anton-dessiatov/stack,CRogers/stack,rekka/stack,Fuuzetsu/stack,DanielG/stack,ant1441/stack,rekka/stack,deech/stack,soenkehahn/stack,lukexi/stack,chadbrewbaker/stack,bollu/stack,mrkkrp/stack,rrnewton/stack,markus1189/stack,bixuanzju/stack,k-bx/stack,achernyak/stack,soenkehahn/stack,agrafix/stack,Andrew-the-Ubergeek/stack,keent/stack,sinelaw/stack,AndrewRademacher/stack,martin-kolinek/stack,luigy/stack,markus1189/stack,vigoo/stack,mietek/stack,Heather/stack,AndrewRademacher/stack,wskplho/stack,kairuku/stack,AndreasPK/stack,robstewart57/stack,Heather/stack,akhileshs/stack,chadbrewbaker/stack,tedkornish/stack,lukexi/stack,duplode/stack,keent/stack,Blaisorblade/stack,narrative/stack,MichielDerhaeg/stack,rvion/stack,GaloisInc/stack,kairuku/stack,MaxGabriel/stack,mrkkrp/stack,rvion/stack,athanclark/stack,wolftune/stack,athanclark/stack,vigoo/stack,ant1441/stack,meiersi-11ce/stack,akhileshs/stack,phadej/stack,harendra-kumar/stack,wolftune/stack,fizruk/stack,mathhun/stack,cocreature/stack,rubik/stack,Denommus/stack,adinapoli/stack,deech/stack,sinelaw/stack,adinapoli/stack,narrative/stack,Blaisorblade/stack,wskplho/stack,MaxGabriel/stack,k-bx/stack,Fuuzetsu/stack,hesselink/stack,sjakobi/stack,tedkornish/stack,cocreature/stack,chreekat/stack,meiersi-11ce/stack