6.1.0

• Improve styles (PR #848)
  • More flexible styles for low-width
  • styles.scss now has vars that can be overridden to change colos and sizes
  • Breaking: Now compact_styles.css replaces styles.css, don't use them together
  • Breaking: Removed icon in "Add sub rule" button
• Added @react-awesome-query-builder/fluent package (PR #727)
• Fix import of is_null and is_not_null ops from SpEL (PR #831) (issue #794)
• Fix import of NOT from SpEL (PR #852) (issue #834)
  Also fixes export of aggregation expression w/o children filter like cars.size() == 2
• Support antd 5 (PR #853) (issue #812)