Fix section counter in appendix

jmlr2e.sty

@@ -15,6 +15,8 @@
 % be invented.)
 % Last edited June 17, 2019 Fabian Pedregosa
 % Added a preprint option
+% Last edited February 3, 2020 Boyue Li
+% Fixed section counter in appendix
 %
 % The name of this file should follow the article document
 % type, e.g. \documentstyle[jmlr]{article}
@@ -345,7 +347,8 @@ are provided at \url{http:https://jmlr.org/papers/v#1/#6.html}.\hfill}}%
 \renewcommand{\appendix}{\par
  \setcounter{section}{0}
  \setcounter{subsection}{0}
- \def\thesection{\Alph{section}}
+ \def\thesection{\Alph{section}}%
+ \ifdefined\theHsection \def\theHsection{\Alph{section}} \fi%
 \def\section{\@ifnextchar*{\@startsiction{section}{1}{\z@}{-0.24in}{0.10in}%
  {\large\bf\raggedright}}%
 {\@startsiction{section}{1}{\z@}{-0.24in}{0.10in}