WordPress 3.9 compatibility verification:
      Updated tested up to versions.
      Updated readme with 1.4.2 release notes.
      Updated translation POT file.
      Update plugin php version to 1.4.2.

git-svn-id: https://plugins.svn.wordpress.org/instant-breadcrumbs/trunk@896784 b8457f37-d9ea-0310-8a92-e5e31aec5664