Bump version to 2.2.1

Author: AlexaraWu

sjtutex/source/sjtutex.dtx

@@ -266,15 +266,15 @@
 %<font&cjk&founder>\ProvidesExplFile{sjtu-cjk-font-founder.def}
 %<font&cjk&hanyi>  {Hanyi CJK fonts definition (SJTUTeX)}
 %<font&cjk&hanyi>\ProvidesExplFile{sjtu-cjk-font-hanyi.def}
-%<!driver>  {\ExplFileDate}{2.2}{\ExplFileDescription}
+%<!driver>  {\ExplFileDate}{2.2.1}{\ExplFileDescription}
 %</!(driver|install)>
 %
 %<*driver>
 \PassOptionsToPackage{fontset=ubuntu}{ctex}
 \documentclass{ctxdoc}
 \newcommand{\sjtutex}{SJTU\TeX}
 \expandafter\def\csname ver@\jobname.dtx\endcsname
-  {2025/02/12 v2.2 SJTUTeX}
+  {2025/03/29 v2.2.1 SJTUTeX}
 \usepackage{float}
 \usepackage{multirow}
 \usepackage{longtable}
@@ -2192,7 +2192,7 @@
 %<article>\LoadClass { ctexart }
 %    \end{macrocode}
 %
-% \changes{unreleased}{2025/03/27}{不再自动载入 \pkg{xcolor} 宏包。}
+% \changes{v2.2.1}{2025/03/27}{不再自动载入 \pkg{xcolor} 宏包。}
 % 载入各宏包。
 %    \begin{macrocode}
 \RequirePackage
@@ -3959,7 +3959,7 @@
 %    \end{macrocode}
 % \end{macro}
 %
-% \changes{unreleased}{2025/03/27}{新增语言设置钩子。}
+% \changes{v2.2.1}{2025/03/27}{新增语言设置钩子。}
 % 语言设置钩子。
 %    \begin{macrocode}
 %<zh>\NewHook { sjtutex / lang / zh }
@@ -4960,7 +4960,7 @@
 %
 % \subsubsection{原创性声明及使用授权书}
 %
-% \changes{unreleased}{2025/03/22}{添加原创性声明变体。}
+% \changes{v2.2.1}{2025/03/22}{添加原创性声明变体。}
 %
 % 声明及授权书文本。
 %    \begin{macrocode}