1.0.0 Open Source release

• PepisCMS codebase is cleaned up and the PepisCMS core is released as open source!
• PepisCMS is now Composer compatible and supports Composer autoload!
• Dropped support for PHP 5.5 and lower. The code is now PHP 5.6 to PHP 7.2 compatible
• Site and module configuration is now stored in database with a fallback to files!
• Improved installer and migration scripts, implemented command line unattended installer
• Installation script now reads default values from ENV variables
• Implemented password history feature that prohibits from reusing previously set passwords (needs to be configured separately)
• Improved authentication security: added timeout on consecutive unsuccessful authentications
• Implemented automatic loading of module models upon first use (for modules)
• Added Behat end-to-end tests covering core features
• Implemented CrudDefinitionBuilder and CrudFieldDefinitionBuilder aiming to simplify CRUD definition setup
• Improved module generation, implemented new module file structure with fallback to the legacy module structure (pre 1.0.0)
• Fixed file manager previews
• Improved backup utility now works even without mysqldump command available
• Implemented fluent API for most used libraries
• CodeIgniter upgraded to version 3.1.9
• CKE Editor updated to 4.9.0
• Pages got the possibility to define a page image
• Migrated to the latest phpspreadsheet library
• Implemented lazy image load for DataGrid, File Manager and CRUD modules to improve performance
• Reviewed application translations
• Added new utility library Query_helper
• Extracted pages as a separate module
• Added possibility to display widgets on the admin dashboard
• Improved cache invalidation
• Improved development features and developer's experience
• Dropped support for PHPTal, FCKEditor
• Dropped support for Spanish and Romanian languages
• Dropped support for features previously marked as deprecated
• System logs now store an additional referer field
• Multiple UI improvements and bug fixes