New features

Support for landing pages layouts:
- Header with CTA, which moves first paragraph up under the page logo, and replaces menu with single CTA button.
- No header, which hides the entire header.
Custom installer:
- Choosing which demo content should be installed.
- An ability to choose demo content and blog/product functionalities.

Improvements

Refactored paragraph settings.
- Paragraph themes. Now you can choose a predefined theme (primary, secondary) and define custom ones for your project.
- Custom themes that inject background and text color to inline styles.
- Padding and margin settings for each paragraph.
- Fields like "Column count" or "Layout" removed and migrated to single d_settings field.
- Improved column count settings, now it can be defined separately for desktop, tablet and mobile.
- Full migration of settings from Droopler 2.1, including modifiers like theme-invert.
- Advanced support for modifying existing paragraph settings and adding new ones. It can be done by plugins and alter functions. This functionality is very important when when we need a well-tailored backend for editors.
Added missing fields (CTA button, icon, long) to paragraphs.
Cleaned up paragraph forms, with separate field groups for items and settings.
Drupal 9 compatibility (please see dev/d9 and release/d9 branches on GitHub).
Updated demo content.
Modules (Google Analytics, Linkit, BEF, Schema Metatag) raised to latest versions.
Refactored SCSS, for more consistency in paragraph variables.
A lot of bugfixes, including better support for Lazy module.