v3.3.0

• component header now can edit HTML content like component footer
• added "section-blank" button in pages, so user can insert blank section that can be use for any customization
• added "getfrom" helper, so user can show post content in each pages that they want {{#getfrom "post-name"}}{{> component-editor }}{{/getfrom}}
• added "author bio" in blog post, so user can show they author bio from setting>author in blog post
• user now can hide comments form individualy in blog post
• jsdom method for change copyright text is change to use built in handlebars method
• user recommend to change "blockit-config.json" to "blockit.config.json" in their theme
• removed section previews, now each theme used blockit-builder is mandatory to provide section previews
• fix codemirror error or not respond when type in HTML editor
• fix error add new category menu when there any hidden post and associated with it
• fix post list not in order after delete some post