\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}
\usepackage{textcomp}
\usepackage[dutch]{babel}
\usepackage{amsmath, amssymb, amsthm}
%\usepackage{libertine, newtxmath}  % conflicts with lmodern remove sigmas
\usepackage[dvipsnames]{xcolor} % For background colors

\definecolor{gruv-box-background}{RGB}{34, 34, 34}  % Backwards compatibility
\definecolor{gruv-box-dark-bg}{RGB}{34, 34, 34}
\definecolor{gruv-box-light-bg}{RGB}{235, 219, 178}
\definecolor{gruv-box-yellow}{RGB}{255, 175, 0}

    % Sans-serif font. Clarifies distinction between math and text
\usepackage{helvet}

% Number sets
\newcommand{\N}{\mathbb{N}}
\newcommand{\Z}{\mathbb{Z}}
\newcommand{\R}{\mathbb{R}}
\newcommand{\C}{\mathbb{C}}
\newcommand{\Deriv}[1]{\frac{\text{d}}{\text{d}#1}}
\newcommand{\Part}[1]{\frac{\partial}{\partial #1}}

% Boxes
\usepackage[dvipsnames]{xcolor}
\usepackage{tikz,lipsum,lmodern}
%\usepackage{lmodern}
\usepackage[most]{tcolorbox}
\usepackage{tabularx}

% Code
\usepackage{listings}
\usepackage[hashEnumerators,smartEllipses]{markdown}  % Doesn't work

% Fancy letters using \mathbcal{letter}
\DeclareFontFamily{U}{BOONDOX-calo}{\skewchar\font=45 }
\DeclareFontShape{U}{BOONDOX-calo}{m}{n}{
  <-> s*[1.05] BOONDOX-r-calo}{}
\DeclareFontShape{U}{BOONDOX-calo}{b}{n}{
  <-> s*[1.05] BOONDOX-b-calo}{}
\DeclareMathAlphabet{\mathbcal}{U}{BOONDOX-calo}{m}{n}
\SetMathAlphabet{\mathbcal}{bold}{U}{BOONDOX-calo}{b}{n}
\DeclareMathAlphabet{\mathbcal}{U}{BOONDOX-calo}{b}{n}

\lstset{frame=tb,
  language=Python,
  aboveskip=3mm,
  belowskip=3mm,
  showstringspaces=false,
  columns=flexible,
  basicstyle={\small\ttfamily},
  numbers=none,
  numberstyle=\tiny\color{gray},
  keywordstyle=\color{blue},
  commentstyle=\color{orange},
  stringstyle=\color{mauve},
  breaklines=true,
  breakatwhitespace=true,
  tabsize=3
}

%\usepackage{geometry}
%\geometry{
%    paper=letterpaper,  % Paper size, change to letterpaper for US letter size
%    top=1in,            % Top margin
%    bottom=1in,         % Bottom margin
%    left=1in,           % Left margin
%    right=1in,          % Right margin
%    headheight=1in,     % Header height
%    footskip=1.4cm,     % Space from the bottom margin to the baseline of the footer
%    headsep=10pt        % Space from the top margin to the baseline of the header
%}

\pdfsuppresswarningpagegroup=1

\usepackage{lipsum}
\newenvironment{myindent}
{\par\leftskip4cm\relax\rightskip1cm\relax}
{\par\leftskip0cm\relax\rightskip0cm\relax}

\def\changemargin#1#2{\list{}{\rightmargin#2\leftmargin#1}\item[]}
\let\endchangemargin=\endlist