%% Just use the original class and pass the options
\LoadClassWithOptions{report}
+\renewcommand{\baselinestretch}{1.2}
+
\makeatletter
+\usepackage{hyphenat}
%
% Customize the titlepage: remove the date, place the publisher name, and
% load a specific file for the verso page, containing some legal notices
\setlength{\parskip}{0.5em} %
\setlength{\parindent}{0pt} %
}{}
+
+\usepackage{titlesec}
+\titleformat{\chapter}{\huge}{\thechapter.}{20pt}{\hyphenpenalty=10000 \Huge}
+\titleformat{\section}{\Large}{\thesection}{1em}{}
+\titleformat{\subsection}{\large}{\thesubsection}{1em}{}
+%% \titleformat{\paragraph}{\normalsize}{\theparagraph}{1em}{}
+%% \titleformat{\subparagraph}{\normalsize}{\thesubparagraph}{1em}{}
+
+\usepackage{titletoc}
+
+% indented subsection (in toc)
+\titlecontents{part}
+[0.0cm] % left margin
+{\vskip 0.5em} % above code
+{% % numbered format
+{\Large\thecontentslabel\quad}%
+}%
+{\Large} % unnumbered format
+{\hfill \contentspage \vskip 0.2em} % filler-page-format, e.g dots
+
+
+% indented subsection (in toc)
+\titlecontents{chapter}
+[0.0cm] % left margin
+{} % above code
+{% % numbered format
+{\large\thecontentslabel.\quad}%
+}%
+{\large} % unnumbered format
+{\hfill \contentspage} % filler-page-format, e.g dots