Add Inside relation mapping

translate/mathMLMap.csv

@@ -366,6 +366,7 @@ ANY,SUBSC,SUPER,->,<msubsup>,PARENT,SUBSC,SUPER,</msubsup>
 Right,->,<mrow>,PARENT,CHILD,</mrow>
 R,->,<mrow>,PARENT,CHILD,</mrow>
 r,->,<mrow>,PARENT,CHILD,</mrow>
+Inside,->,<mrow>,PARENT,CHILD,</mrow>
 HOR,->,<mrow>,PARENT,CHILD,</mrow>
 ^,->,<msup>,PARENT,CHILD,</msup>
 _,->,<msub>,PARENT,CHILD,</msub>