Fix util.escape.filename which used to change filename to lowercase forcibly
Fix util.escape.filename which used to change filename to lowercase forcibly

glabcn/hexo,zhipengyan/hexo,maominghui/hexo,fuchao2012/hexo,registercosmo/hexo,zhipengyan/hexo,DevinLow/DevinLow.github.io,keeleys/hexo,luodengxiong/hexo,leelynd/tapohuck,hanhailong/hexo,memezilla/hexo,XGHeaven/hexo,G-g-beringei/hexo,ppker/hexo,littledogboy/hexo,r4-keisuke/hexo,runlevelsix/hexo,tzq668766/hexo,hugoxia/hexo,crystalwm/hexo,ppker/hexo,delkyd/hexo,viethang/hexo,Carbs0126/hexo,liukaijv/hexo,noikiy/hexo,nextexit/hexo,wenzhucjy/hexo,wangjordy/wangjordy.github.io,zhoulingjun/hexo,oomusou/hexo,Bob1993/hexo,wyfyyy818818/hexo,biezhihua/hexo,hackjustu/hexo,Gtskk/hexo,hexojs/hexo,initiumlab/hexo,haoyuchen1992/hexo,xcatliu/hexo,SaiNadh001/hexo,cjwind/hexx,kennethlyn/hexo,DevinLow/DevinLow.github.io,leikegeek/hexo,lknny/hexo,karenpeng/hexo,wflmax/hexo,jonesgithub/hexo,beni55/hexo,kywk/hexi,logonmy/hexo,will-zhangweilin/myhexo,lukw00/hexo,zhangg/hexo,meaverick/hexo,tibic/hexo,Regis25489/hexo,hexojs/hexo,kywk/hexi,magicdawn/hexo,sundyxfan/hexo,lookii/looki,dieface/hexo,GGuang/hexo,BruceChao/hexo,xushuwei202/hexo,jollylulu/hexo,HiWong/hexo,luinnx/hexo,dreamren/hexo,Jeremy017/hexo,sailtoy/hexo,wwff/hexo,xiaoliuzi/hexo,imjerrybao/hexo,liuhongjiang/hexo,noname007/hexo-1,znanl/znanl,DanielHit/hexo,zoubin/hexo,aulphar/hexo,zongkelong/hexo,SampleLiao/hexo,chenbojian/hexo,iamprasad88/hexo,elegantwww/hexo,chenzaichun/hexo,JasonMPE/hexo,zhi1ong/hexo,HcySunYang/hexo,gaojinhua/hexo,jp1017/hexo,allengaller/hexo,ChaofengZhou/hexo,amobiz/hexo,k2byew/hexo,wangjordy/wangjordy.github.io,Richardphp/hexo