Updated tested WordPress version (4.0.1)

git-svn-id: https://plugins.svn.wordpress.org/multicolumn-category-widget/trunk@1046709 b8457f37-d9ea-0310-8a92-e5e31aec5664
Updated tested WordPress version (4.1.0)

git-svn-id: https://plugins.svn.wordpress.org/multicolumn-category-widget/trunk@1046715 b8457f37-d9ea-0310-8a92-e5e31aec5664