Update readme.txt

Merge pull request #53 from justcoded/feature/wp-5.5

Updated readme.txt up to WP 5.5

Merge pull request #51 from justcoded/feature/updating-assets-property

creating new var for frontend assets folder name

Merge pull request #49 from justcoded/hotfix/update-autoptimize-regex

update regex

Merge pull request #48 from justcoded/hotfix/update-autoptimize-regex

updating regex for links with a slash

Merge pull request #46 from justcoded/develop

REST Controller, Cronjob, auto target blank, disable gutenberg option

Set correct version after sync with PRs

Merge pull request #43 from jimmitjoo/master

Make it possible to enable Gutenberg editor for custom post types

Merge branch 'develop'

Merge pull request #37 from justcoded/develop

Add support to load row/widget class by direct name