Show webp images by default

Previously, lsix only showed webp if the filename was specified. Now,
webp files will be listed if no filenames are given on the command line.

Author: hackerb9

lsix

@@ -189,7 +189,7 @@ main() {
     if [[ $# == 0 ]]; then
 	# No command line args? Use a sorted list of image files in CWD.
 	shopt -s nullglob nocaseglob nocasematch
-	set -- *{jpg,jpeg,png,gif,tiff,tif,p?m,x[pb]m,bmp,ico,svg,eps}
+	set -- *{jpg,jpeg,png,gif,webp,tiff,tif,p?m,x[pb]m,bmp,ico,svg,eps}
 	[[ $# != 0 ]] || exit
 	readarray -t < <(printf "%s\n" "$@" | sort)