update release notes with changes from #1581
update release notes with changes from #1581

finfish/scrapy,starrify/scrapy,Ryezhang/scrapy,pawelmhm/scrapy,w495/scrapy,eLRuLL/scrapy,jc0n/scrapy,elacuesta/scrapy,wujuguang/scrapy,arush0311/scrapy,pawelmhm/scrapy,Ryezhang/scrapy,crasker/scrapy,ArturGaspar/scrapy,GregoryVigoTorres/scrapy,kmike/scrapy,umrashrf/scrapy,scrapy/scrapy,taito/scrapy,wenyu1001/scrapy,pablohoffman/scrapy,Ryezhang/scrapy,pablohoffman/scrapy,scrapy/scrapy,jc0n/scrapy,wenyu1001/scrapy,starrify/scrapy,elacuesta/scrapy,foromer4/scrapy,Parlin-Galanodel/scrapy,crasker/scrapy,rootAvish/scrapy,w495/scrapy,rolando/scrapy,crasker/scrapy,jc0n/scrapy,wujuguang/scrapy,shaform/scrapy,rolando-contrib/scrapy,starrify/scrapy,rolando-contrib/scrapy,GregoryVigoTorres/scrapy,rolando-contrib/scrapy,foromer4/scrapy,dangra/scrapy,finfish/scrapy,pawelmhm/scrapy,kmike/scrapy,umrashrf/scrapy,shaform/scrapy,redapple/scrapy,pablohoffman/scrapy,shaform/scrapy,rolando/scrapy,umrashrf/scrapy,ssteo/scrapy,elacuesta/scrapy,rootAvish/scrapy,wujuguang/scrapy,Parlin-Galanodel/scrapy,arush0311/scrapy,w495/scrapy,finfish/scrapy,taito/scrapy,rolando/scrapy,ArturGaspar/scrapy,taito/scrapy,darkrho/scrapy-scrapy,redapple/scrapy,GregoryVigoTorres/scrapy,kmike/scrapy,darkrho/scrapy-scrapy,scrapy/scrapy,wenyu1001/scrapy,dangra/scrapy,ssteo/scrapy,rootAvish/scrapy,darkrho/scrapy-scrapy,Parlin-Galanodel/scrapy,eLRuLL/scrapy,foromer4/scrapy,dangra/scrapy,redapple/scrapy,eLRuLL/scrapy,arush0311/scrapy,ssteo/scrapy,ArturGaspar/scrapy