1.4.5 update

git-svn-id: https://plugins.svn.wordpress.org/book-review-library/trunk@812692 b8457f37-d9ea-0310-8a92-e5e31aec5664
updates stable tag in readme

git-svn-id: https://plugins.svn.wordpress.org/book-review-library/trunk@812693 b8457f37-d9ea-0310-8a92-e5e31aec5664