Version 2.0.0: max weight and multiple configurations support

git-svn-id: https://plugins.svn.wordpress.org/weight-based-shipping-for-woocommerce/trunk@886883 b8457f37-d9ea-0310-8a92-e5e31aec5664
Fix typo

git-svn-id: https://plugins.svn.wordpress.org/weight-based-shipping-for-woocommerce/trunk@886884 b8457f37-d9ea-0310-8a92-e5e31aec5664