Altered PDF generation.

Added code to inject \appendix to the first appendix notebook
so that they are properly labelled. Started g-h chapter as chapter
one. There is probably a lot more I want to do now that I have
the basic idea of how to inject latex into the files before creating
the PDF, but this is a good start.

.gitignore

@@ -1,3 +1,6 @@
+# test document not for distribution
+short.pdf
+
 # Byte-compiled / optimized / DLL files
 __pycache__/
 *.py[cod]