deletions | additions       diff --git a/preamble.tex b/preamble.tex  index 54cd643..d85f9b9 100644  --- a/preamble.tex  +++ b/preamble.tex 
...
\documentclass{report}  \usepackage{amsfonts,amsmath,amssymb}  \usepackage{siunitx}  \usepackage{graphicx}  \usepackage{color}  \usepackage{url}