Merge branch 'master' into SMJI/stack/min_max_const_time

Author: S-M-J-I

checkstyle.xml

@@ -183,7 +183,7 @@
     <!-- See https://checkstyle.org/checks/misc/index.html -->
     <module name="ArrayTypeStyle"/>
     <!-- TODO <module name="FinalParameters"/> -->
-    <!-- TODO <module name="TodoComment"/> -->
+    <module name="TodoComment"/>
     <module name="UpperEll"/>
 
     <!-- https://checkstyle.org/filters/suppressionxpathfilter.html -->