Minor feature and bug fix release for 6.1.x series

• improves MIME type check and verify file extension check in upload handler
• fixes file tool visualisation for all and linked mode
• moves page tag pattern and file extension sets to constant array (self::PATTERN)
• moves wacko_language into wacko_translation
• adds upload_allowed_exts option to config
• adds file hash to file table (set missing file hash for legacy records via adminupdate action)
• adds duplicate file notices
• skips now is_executable($dir) check for Windows in restore module
• svg-sanitizer 0.15.4
• miscellaneous minor fixes

Full Changelog: 6.1.18...6.1.19

Minor feature and bug fix release for 6.1.x series

• adds icon for action to WikiEdit
• adds option to re-hash all attachments
• allows now hyphen-minus in file name and ignores duplicate files
• uses SafeHTML to clean CDATA in svg-sanitizer
• adds option to send a copy of a personal message to the sender
• adds admin_replace action
• Hashids 5.0.2
• PHPMailer 6.8.0
• svg sanitizer 0.16

Full Changelog: 6.1.19...6.1.20

Minor feature and bug fix release for 6.1.x series

• changes format for backup.log to JSON (see upgrade page for more details)
• adds gallery action to core (except lightbox)
• adds thumbnail support to wiki formatter (activate in upload module)

Full Changelog: 6.1.20...6.1.21

Minor feature and bug fix release for 6.1.x series

• unified link templates
• adds max_image_area, max_image_width and min_thumbnail_distance option to config
• adds help option to actions help=1 (print help and exit)
• adds option to localize action help (see action/lang/help.<lang>.php)
• adds function number_format() and template filter number_format (uses intl NumberFormatter)
• replaces Mozilla specific WikiEdit CSS with var()
• replaces unnecessary double quotes
• adds admin_massregex action (see community/action)
• split HTMLSax3 to one file per class
• PHP Thumb Library 2.3.0
• SafeHTML 1.3.13

Full Changelog: 6.1.21...6.1.22

Minor feature and bug fix release for 6.1.x series

• fixes error creating cache table
• fixes missing byte factor
• minor installer fixes
• adds option email_confirmation to enforce email confirmation
• adds option forbidden_email_domains to blacklist email domains
• adds regex pattern for action and formatter
• adds backup note option

Full Changelog: 6.1.22...6.1.23

disable Topics API

turn off doubleclick edit for actions with form input and textarea $this->doubleclick = false;

add message set

add missing file/thumb_local/ to example

set WebP as default image type for freeCap