chore(release): 4.19.0 [skip ci]

# [4.19.0](https://github.com/ezyang/htmlpurifier/compare/v4.18.0...v4.19.0) (2025-10-17)

### Bug Fixes

* add warning for misleading option ([#433](https://github.com/ezyang/htmlpurifier/issues/433)) ([b21a591](b21a59101f))
* catastrophic backtracking in Core.AggressivelyFixLt ([#440](https://github.com/ezyang/htmlpurifier/issues/440)) ([418eeb7](418eeb7dc0))
* Deprecated: preg_replace(): Passing null to parameter [#3](https://github.com/ezyang/htmlpurifier/issues/3) ($subject) o… ([#421](https://github.com/ezyang/htmlpurifier/issues/421)) ([5d154a2](5d154a2393))
* non-substantive typos ([#434](https://github.com/ezyang/htmlpurifier/issues/434)) ([c2bc354](c2bc3549a3))

### Features

* Add CSS direction support ([#429](https://github.com/ezyang/htmlpurifier/issues/429)) ([63e631e](63e631ebd3))
* Add option for safe iframe hosts using array lookup ([#423](https://github.com/ezyang/htmlpurifier/issues/423)) ([b5cbf0c](b5cbf0cc3d))
* Allow more image widths by default ([#430](https://github.com/ezyang/htmlpurifier/issues/430)) ([00a0748](00a0748427))
* Define option URI.AllowedSymbols ([#447](https://github.com/ezyang/htmlpurifier/issues/447)) ([77ebd08](77ebd08632))
* PHP 8.4 support ([#441](https://github.com/ezyang/htmlpurifier/issues/441)) ([ff005f6](ff005f6edc))
* Support PHP 8.5 versions ([#453](https://github.com/ezyang/htmlpurifier/issues/453)) ([1eb05d9](1eb05d9864))

library/HTMLPurifier.includes.php

@@ -7,7 +7,7 @@
  * primary concern and you are using an opcode cache. PLEASE DO NOT EDIT THIS
  * FILE, changes will be overwritten the next time the script is run.
  *
- * @version 4.18.0
+ * @version 4.19.0
  *
  * @warning
  *      You must *not* include any other HTML Purifier files before this file,