graded-review: Use LaTeXgit to set version automatically

[joel-coffman]

The LaTeXgit package supports fetching information from Git and typesetting it. This package could be used instead of creating the version identifier in the Makefile and writing it to a separate file.

[joel-coffman]

Example implementation using this package:

diff --git a/assessments/graded-reviews/relational-design/charlie.tex b/assessments/graded-reviews/relational-design/charlie.tex
index 43a64a5..b224c7d 100644
--- a/assessments/graded-reviews/relational-design/charlie.tex
+++ b/assessments/graded-reviews/relational-design/charlie.tex
@@ -21,6 +21,7 @@
 ]{geometry}
 \usepackage[acronym]{glossaries}
 \usepackage{graphicx}
+\usepackage{latexgit}
 \usepackage{ltablex}
 \usepackage{microtype}
 \usepackage{minted}
@@ -79,7 +80,6 @@

 % load course information
 \input{../../../course}
-\input{.version}

 % document-specific glossary entries
@@ -94,6 +94,14 @@
   \dashuline{#1}%
 }

+\makeatletter
+\pgfkeys{/git,default}%
+\git@command{git describe --abbrev=12 --always --dirty=+}%
+\edef\version{%
+  \git@result%
+}
+\makeatother
+
 \let\oldversion=\version\relax
 \renewcommand*{\version}[1][\currfilebase\ (revision~\oldversion)]{%
   \def\initial##1{%

Integrating directly with the graded review (GR) package would simplify this code. (Note: The redefinition of \version at the end of the patch is due to #5.)