Compare with lower case strings when using toLowerCase
Compare with lower case strings when using toLowerCase

Credit to @gdh1995 for catching this.

poacher2k/vimium,gdh1995/vimium,philc/vimium,smblott-github/vimium,poacher2k/vimium,mrmr1993/vimium,gdh1995/vimium,mrmr1993/vimium,decaffeinate-examples/vimium,smblott-github/vimium,mrmr1993/vimium,philc/vimium,poacher2k/vimium,philc/vimium,smblott-github/vimium,decaffeinate-examples/vimium,gdh1995/vimium,decaffeinate-examples/vimium