[TASK] Deprecate Parser::setCharset() and Parser::getCharset()

Fixes #681

Author: oliverklee

CHANGELOG.md

@@ -20,6 +20,7 @@ This project adheres to [Semantic Versioning](https://semver.org/).
 
 ### Deprecated
 
+- Deprecate `Parser::setCharset()` and `Parser::getCharset()` (#688) 
 - Deprecate `DeclarationBlock::createBorderShorthand()` (#578)
 - Deprecate `DeclarationBlock::createFontShorthand()` (#580)
 - Deprecate `DeclarationBlock::createDimensionsShorthand()` (#579)

src/Parser.php

@@ -33,6 +33,8 @@ public function __construct($sText, ?Settings $oParserSettings = null, $iLineNo
      * Sets the charset to be used if the CSS does not contain an `@charset` declaration.
      *
      * @param string $sCharset
+     *
+     * @deprecated will be removed in version 9.0.0 with #687
      */
     public function setCharset($sCharset): void
     {
@@ -41,6 +43,8 @@ public function setCharset($sCharset): void
 
     /**
      * Returns the charset that is used if the CSS does not contain an `@charset` declaration.
+     *
+     * @deprecated will be removed in version 9.0.0 with #687
      */
     public function getCharset(): void
     {