New version released V.1.7.4 
Fixed canvas style sheet path issue.

git-svn-id: https://plugins.svn.wordpress.org/page-layout-builder/trunk@985589 b8457f37-d9ea-0310-8a92-e5e31aec5664
Removed 3 canvas theme

git-svn-id: https://plugins.svn.wordpress.org/page-layout-builder/trunk@985591 b8457f37-d9ea-0310-8a92-e5e31aec5664