add support for \beginappendices (#52)

* add test for appendix numbering

* try to create a macro for simple appendix

* use a name that is not taken

* rename command \beginappendices

* fix sample

Author: chrisfenner

Dockerfile

@@ -42,7 +42,8 @@ RUN tlmgr update --self && \
     newunicodechar \
     tools \
     changepage \
-    draftwatermark
+    draftwatermark \
+    appendix
 
 RUN apk upgrade && apk add --no-cache \
     bash \

sample3.md

@@ -264,4 +264,14 @@ contents longer than one page.
 
 Test?
 
----
+---
+
+\beginappendices
+
+# First Appendix
+
+I'm thinking A is a good one here.
+
+# Second Appendix
+
+I'm thinking B is a good one here.

template/eisvogel.latex

@@ -698,6 +698,14 @@ $endif$
   \gdef\clearpageafterfirst{\clearpage}%
 }
 
+% Allow TCG documents to use '\beginappendices' to easily mark the transition to appendices.
+\usepackage{appendix}
+\newcommand{\beginappendices}{
+  \appendix
+  \appendixpage
+  \addappheadtotoc
+}
+
 \newcommand{\coverbg}{/resources/img/greentop.png}
 
 $if(template)$