Added "exclude" parameter testing to unittests.
Added "exclude" parameter testing to unittests.

hectoruelo/scrapy,rolando-contrib/scrapy,olafdietsche/scrapy,dracony/scrapy,pablohoffman/scrapy,smaty1/scrapy,crasker/scrapy,ylcolala/scrapy,1yvT0s/scrapy,dacjames/scrapy,Bourneer/scrapy,dhenyjarasandy/scrapy,rdowinton/scrapy,KublaikhanGeek/scrapy,cleydson/scrapy,shaform/scrapy,emschorsch/scrapy,scrapy/scrapy,w495/scrapy,fpy171/scrapy,sigma-random/scrapy,dgillis/scrapy,pombredanne/scrapy,zorojean/scrapy,jamesblunt/scrapy,dracony/scrapy,Parlin-Galanodel/scrapy,darkrho/scrapy-scrapy,huoxudong125/scrapy,ylcolala/scrapy,barraponto/scrapy,scorphus/scrapy,smaty1/scrapy,legendtkl/scrapy,tntC4stl3/scrapy,rahulsharma1991/scrapy,avtoritet/scrapy,tliber/scrapy,umrashrf/scrapy,GregoryVigoTorres/scrapy,ArturGaspar/scrapy,CodeJuan/scrapy,godfreyy/scrapy,elacuesta/scrapy,jiezhu2007/scrapy,nett55/scrapy,pawelmhm/scrapy,CENDARI/scrapy,Lucifer-Kim/scrapy,z-fork/scrapy,elijah513/scrapy,ramiro/scrapy,yidongliu/scrapy,famorted/scrapy,Allianzcortex/scrapy,lacrazyboy/scrapy,jc0n/scrapy,wangjun/scrapy,arush0311/scrapy,emschorsch/scrapy,kimimj/scrapy,TarasRudnyk/scrapy,eliasdorneles/scrapy,starrify/scrapy,huoxudong125/scrapy,wzyuliyang/scrapy,lacrazyboy/scrapy,Zephor5/scrapy,hwsyy/scrapy,agusc/scrapy,Slater-Victoroff/scrapy,pombredanne/scrapy,yusofm/scrapy,olorz/scrapy,rolando/scrapy,ashishnerkar1/scrapy,godfreyy/scrapy,github-account-because-they-want-it/scrapy,beni55/scrapy,jorik041/scrapy,redapple/scrapy,zorojean/scrapy,yarikoptic/scrapy,Bourneer/scrapy,ylcolala/scrapy,arush0311/scrapy,jeffreyjinfeng/scrapy,YeelerG/scrapy,CENDARI/scrapy,JacobStevenR/scrapy,eliasdorneles/scrapy,fafaman/scrapy,aivarsk/scrapy,rklabs/scrapy,pawelmhm/scrapy,Chenmxs/scrapy,arush0311/scrapy,mgedmin/scrapy,chekunkov/scrapy,fontenele/scrapy,Ryezhang/scrapy,foromer4/scrapy,1yvT0s/scrapy,nikgr95/scrapy,fontenele/scrapy,wujuguang/scrapy,jdemaeyer/scrapy,profjrr/scrapy,pfctdayelise/scrapy,Chenmxs/scrapy,raphaelfruneaux/scrapy,eliasdorneles/scrapy,johnardavies/scrapy,taito/scrapy,AaronTao1990/scrapy,olafdietsche/scrapy,Cnfc19932/scrapy,zackslash/scrapy,ENjOyAbLE1991/scrapy,hansenDise/scrapy,github-account-because-they-want-it/scrapy,wujuguang/scrapy,pablohoffman/scrapy,rahul-c1/scrapy,kalessin/scrapy,emschorsch/scrapy,nett55/scrapy,elijah513/scrapy,mgedmin/scrapy,farhan0581/scrapy,Lucifer-Kim/scrapy,barraponto/scrapy,Timeship/scrapy,moraesnicol/scrapy,URXtech/scrapy,mlyundin/scrapy,KublaikhanGeek/scrapy,darkrho/scrapy-scrapy,wangjun/scrapy,rolando-contrib/scrapy,barraponto/scrapy,livepy/scrapy,moraesnicol/scrapy,Chenmxs/scrapy,URXtech/scrapy,legendtkl/scrapy,cursesun/scrapy,YeelerG/scrapy,Cnfc19932/scrapy,pombredanne/scrapy,hyrole/scrapy,GregoryVigoTorres/scrapy,redapple/scrapy,hwsyy/scrapy,umrashrf/scrapy,dhenyjarasandy/scrapy,sardok/scrapy,chekunkov/scrapy,bmess/scrapy,fqul/scrapy,agreen/scrapy,cursesun/scrapy,nikgr95/scrapy,taito/scrapy,YeelerG/scrapy,Adai0808/scrapy-1,tliber/scrapy,z-fork/scrapy,TarasRudnyk/scrapy,Digenis/scrapy,stenskjaer/scrapy,pranjalpatil/scrapy,rolando-contrib/scrapy,legendtkl/scrapy,eLRuLL/scrapy,yusofm/scrapy,WilliamKinaan/scrapy,wangjun/scrapy,nowopen/scrapy,rahulsharma1991/scrapy,crasker/scrapy,snowdream1314/scrapy,hansenDise/scrapy,scorphus/scrapy,liyy7/scrapy,pranjalpatil/scrapy,wzyuliyang/scrapy,ssh-odoo/scrapy,kimimj/scrapy,kazitanvirahsan/scrapy,heamon7/scrapy,elacuesta/scrapy,cyberplant/scrapy,nguyenhongson03/scrapy,webmakin/scrapy,kashyap32/scrapy,profjrr/scrapy,scorphus/scrapy,jc0n/scrapy,olorz/scrapy,songfj/scrapy,xiao26/scrapy,dgillis/scrapy,cyrixhero/scrapy,gnemoug/scrapy,KublaikhanGeek/scrapy,xiao26/scrapy,avtoritet/scrapy,Geeglee/scrapy,nowopen/scrapy,irwinlove/scrapy,webmakin/scrapy,nfunato/scrapy,carlosp420/scrapy,Zephor5/scrapy,aivarsk/scrapy,dhenyjarasandy/scrapy,kazitanvirahsan/scrapy,elijah513/scrapy,rdowinton/scrapy,jdemaeyer/scrapy,nikgr95/scrapy,umrashrf/scrapy,fafaman/scrapy,Cnfc19932/scrapy,ssteo/scrapy,csalazar/scrapy,jc0n/scrapy,olafdietsche/scrapy,zjuwangg/scrapy,tagatac/scrapy,amboxer21/scrapy,johnardavies/scrapy,songfj/scrapy,ENjOyAbLE1991/scrapy,kalessin/scrapy,dgillis/scrapy,dacjames/scrapy,johnardavies/scrapy,tagatac/scrapy,farhan0581/scrapy,Adai0808/scrapy-1,Slater-Victoroff/scrapy,Digenis/scrapy,pablohoffman/scrapy,AaronTao1990/scrapy,curita/scrapy,finfish/scrapy,tntC4stl3/scrapy,dracony/scrapy,jiezhu2007/scrapy,Lucifer-Kim/scrapy,TarasRudnyk/scrapy,ssteo/scrapy,heamon7/scrapy,darkrho/scrapy-scrapy,snowdream1314/scrapy,coderabhishek/scrapy,olorz/scrapy,cyberplant/scrapy,Geeglee/scrapy,mgedmin/scrapy,jeffreyjinfeng/scrapy,liyy7/scrapy,finfish/scrapy,rootAvish/scrapy,yidongliu/scrapy,joshlk/scrapy,rahulsharma1991/scrapy,cyrixhero/scrapy,agusc/scrapy,beni55/scrapy,nowopen/scrapy,WilliamKinaan/scrapy,raphaelfruneaux/scrapy,Preetwinder/scrapy,pfctdayelise/scrapy,yidongliu/scrapy,devGregA/scrapy,amboxer21/scrapy,rootAvish/scrapy,liyy7/scrapy,hwsyy/scrapy,zjuwangg/scrapy,agreen/scrapy,wenyu1001/scrapy,amboxer21/scrapy,Allianzcortex/scrapy,taito/scrapy,hansenDise/scrapy,pranjalpatil/scrapy,kazitanvirahsan/scrapy,kmike/scrapy,pfctdayelise/scrapy,rahul-c1/scrapy,haiiiiiyun/scrapy,yarikoptic/scrapy,jorik041/scrapy,devGregA/scrapy,kalessin/scrapy,rootAvish/scrapy,IvanGavran/scrapy,tliber/scrapy,haiiiiiyun/scrapy,ramiro/scrapy,rahul-c1/scrapy,codebhendi/scrapy,CodeJuan/scrapy,eLRuLL/scrapy,gbirke/scrapy,jeffreyjinfeng/scrapy,zhangtao11/scrapy,WilliamKinaan/scrapy,Adai0808/scrapy-1,ashishnerkar1/scrapy,chekunkov/scrapy,Preetwinder/scrapy,tagatac/scrapy,ramiro/scrapy,jiezhu2007/scrapy,jdemaeyer/scrapy,nfunato/scrapy,github-account-because-they-want-it/scrapy,hyrole/scrapy,yusofm/scrapy,JacobStevenR/scrapy,Parlin-Galanodel/scrapy,zjuwangg/scrapy,rklabs/scrapy,rolando/scrapy,zackslash/scrapy,w495/scrapy,shaform/scrapy,xiao26/scrapy,Partoo/scrapy,fqul/scrapy,IvanGavran/scrapy,kmike/scrapy,smaty1/scrapy,dangra/scrapy,Ryezhang/scrapy,hyrole/scrapy,kimimj/scrapy,Ryezhang/scrapy,fpy171/scrapy,AaronTao1990/scrapy,cyberplant/scrapy,GregoryVigoTorres/scrapy,ssteo/scrapy,Slater-Victoroff/scrapy,jamesblunt/scrapy,zackslash/scrapy,Partoo/scrapy,snowdream1314/scrapy,csalazar/scrapy,fafaman/scrapy,codebhendi/scrapy,famorted/scrapy,irwinlove/scrapy,elacuesta/scrapy,yarikoptic/scrapy,heamon7/scrapy,profjrr/scrapy,cleydson/scrapy,redapple/scrapy,rklabs/scrapy,JacobStevenR/scrapy,OpenWhere/scrapy,CENDARI/scrapy,rolando/scrapy,coderabhishek/scrapy,Preetwinder/scrapy,OpenWhere/scrapy,cursesun/scrapy,fqul/scrapy,bmess/scrapy,finfish/scrapy,Timeship/scrapy,Geeglee/scrapy,huoxudong125/scrapy,irwinlove/scrapy,hbwzhsh/scrapy,dacjames/scrapy,CodeJuan/scrapy,fontenele/scrapy,zorojean/scrapy,shaform/scrapy,dangra/scrapy,hectoruelo/scrapy,codebhendi/scrapy,IvanGavran/scrapy,cleydson/scrapy,livepy/scrapy,fpy171/scrapy,Timeship/scrapy,eLRuLL/scrapy,scrapy/scrapy,rdowinton/scrapy,zhangtao11/scrapy,w495/scrapy,beni55/scrapy,foromer4/scrapy,gbirke/scrapy,bmess/scrapy,Partoo/scrapy,carlosp420/scrapy,stenskjaer/scrapy,cyrixhero/scrapy,Zephor5/scrapy,Djlavoy/scrapy,starrify/scrapy,wujuguang/scrapy,farhan0581/scrapy,Djlavoy/scrapy,pawelmhm/scrapy,songfj/scrapy,curita/scrapy,joshlk/scrapy,Digenis/scrapy,nfunato/scrapy,ssh-odoo/scrapy,wenyu1001/scrapy,kmike/scrapy,URXtech/scrapy,Allianzcortex/scrapy,coderabhishek/scrapy,ArturGaspar/scrapy,nett55/scrapy,godfreyy/scrapy,foromer4/scrapy,hbwzhsh/scrapy,dangra/scrapy,kashyap32/scrapy,wzyuliyang/scrapy,devGregA/scrapy,moraesnicol/scrapy,carlosp420/scrapy,Djlavoy/scrapy,wenyu1001/scrapy,aivarsk/scrapy,agreen/scrapy,crasker/scrapy,avtoritet/scrapy,zhangtao11/scrapy,tntC4stl3/scrapy,starrify/scrapy,mlyundin/scrapy,sigma-random/scrapy,Bourneer/scrapy,OpenWhere/scrapy,haiiiiiyun/scrapy,scrapy/scrapy,nguyenhongson03/scrapy,ssh-odoo/scrapy,lacrazyboy/scrapy,ArturGaspar/scrapy,csalazar/scrapy,curita/scrapy,gnemoug/scrapy,ENjOyAbLE1991/scrapy,joshlk/scrapy,kashyap32/scrapy,webmakin/scrapy,famorted/scrapy,hectoruelo/scrapy,mlyundin/scrapy,livepy/scrapy,Parlin-Galanodel/scrapy,stenskjaer/scrapy,1yvT0s/scrapy,hbwzhsh/scrapy,raphaelfruneaux/scrapy,sardok/scrapy,agusc/scrapy,z-fork/scrapy,nguyenhongson03/scrapy,jorik041/scrapy