Add feature dependency graph

graphics/feature_dependency.tex

@@ -0,0 +1,16 @@
+\documentclass{standalone}
+\usepackage{tikz}
+\usetikzlibrary {arrows.meta,graphs,graphdrawing} \usegdlibrary {layered}
+\tikzset{nodes={text height=.7em, text width=1.2cm, align=center,
+draw=black!50, thick, font=\footnotesize, fill=white},
+>={Stealth[round,sep]}, rounded corners, semithick}
+
+\begin{document}
+\begin{tikzpicture}
+    \graph [layered layout, level distance=1.2cm, sibling sep=.5em, sibling distance=1.5cm, sweep crossing minimization] {
+        "Feat. A" -> {"Feat. B", "Feat. C"};
+        "Feat. D" ->[edges=white!99] "Feat. C" -> "Feat. E";
+    };
+\end{tikzpicture}
+\end{document}
+