\usepackage{graphicx}  % for nice figure importing functionality
\usepackage{enumitem}  % collapse line spacing of enumerations
\usepackage{hyperref}  % embed URLs with nice intralinks
\graphicspath{{static/figures}}

\usepackage{mathtools}
\DeclarePairedDelimiter\bra{\langle}{\rvert}
\DeclarePairedDelimiter\ket{\lvert}{\rangle}
\DeclarePairedDelimiterX\braket[2]{\langle}{\rangle}{#1\,\delimsize\vert\,\mathopen{}#2}
% Usage: \bra{...} for regular, \bra*{...} for scaling