New features
[ebca80b] Added a security voter to manage blog post permissions (@yceruto)
[d579b49] Simplified the post list in the backend to display only your own posts (@yceruto)
[e702851] Added a User relationship to Post and Comment entities (@yceruto)
[ae9381d] Displayed blog post metadata (author and publishing date) in the public site (@javiereguiluz)
Bug fixes
[8e8719d][4b0cda3][6964e23] Minor tweaks to the admin index, show, new and edit pages (@javiereguiluz)
[12ff0ab] Validate user data before save in the "app:add-user" command (@yceruto)