Firt version

First version of the class “itmthesis.cls”, it works and includes the minimal set:
 - Identification
-  Preliminary declarations
- Declarations for chapters and sections

itmthesis.cls

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+%************************************
+%1 Identification:
+\NeedsTeXFormat{LaTeX2e}
+\ProvidesClass{itmthesis}[2018/05/04 ITMorelia Thesis Class by Gerardo Marx]
+%************************************
+%2    Preliminary declarations
+%2.1  The basic class:
+\LoadClass{report}
+%2.2  Packages:
+\RequirePackage[utf8]{inputenc}
+\RequirePackage[colorlinks=true]{hyperref}
+\RequirePackage{blindtext}
+%2.2.1 Booleans  
+\RequirePackage{ifthen}
+  \newboolean{@drafting} % print version information on pages
+  \newboolean{@english}  % activates the english version at babel otherwise english
+%2.2.2 Colors
+\RequirePackage{xcolor}
+  \definecolor{c1}{rgb}{0,0,1} % blue
+  \hypersetup{
+    linkcolor={c1}, % internal links
+    citecolor={c1}, % citations
+    urlcolor={c1} % external links/urls
+  }
+%2.2.2 This package is essentially a replacement—partial or total—for the LATEX macros related with sections—namely titles, headers and contents.
+\RequirePackage{titlesec}
+%
+\RequirePackage{xargs} % needed for extended newcommand and others
+\RequirePackage{array} % needed for extended options for array
+\RequirePackage{amsmath}
+%2.3  Page settings:
+\RequirePackage[left=3cm,right=3cm,top=3cm,bottom=3cm]{geometry}
+%2.4    Macros and Commands:
+%2.4.1    Derivatives
+\newcommandx{\pd}[3][1=]{%
+  \frac{\partial^{#1} #2}{\partial #3^{#1}}
+  }
+%2.4.1    Dbf   
+\renewcommand{\d}{{\rm d}}
+%2.5  Environments:
+%2.5.1  Arrays of equations:
+  
+%************************************
+%3 Options:
+\DeclareOption{drafting}{\setboolean{@drafting}{true}}
+\DeclareOption{spanish}{
+  %Code option:
+  \setboolean{@spanish}{true}
+  \typeout{spanish to babel}
+  }
+%end code option
+\ProcessOptions\relax
+%************************************
+% 4 Declarations:
+%-------------------------------------
+
+
+%4.0 chapter
+\renewcommand{\thechapter}{\Roman{chapter}} %Roman enumeration
+\titleformat{\chapter}[display]%shape
+  %{\bfseries\Huge\scshape}%Format applyed to the title
+  {\Huge\filleft\sc}%Format applyed to the title
+  {\filleft\sc{\chaptertitlename} \thechapter}%Label text and format
+  {4ex}%Separation between Label and Title
+  {}%Before code 
+  [\vspace{2ex}
+\titlerule]%After code
+ %
+
+%4.1 section
+\titleformat{\section}         % Customise the \section command 
+  {\Large\scshape\raggedright} % Make the \section headers large (\Large),
+                               % small capitals (\scshape) and left aligned (\raggedright)
+  {}{0em}                      % Can be used to give a prefix to all sections, like 'Section ...'
+  {}                           % Can be used to insert code before the heading
+  [\titlerule]                 % Inserts a horizontal line after the heading  
+%4.2 subsection  
+\titleformat{\subsection}
+  {\large\scshape\raggedright}
+  {}{0em}
+  {}
+
+

thesisStructure.tex

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+\documentclass{itmthesis}
+\usepackage[spanish]{babel}
+\begin{document}
+\chapter{Title of the Chapter}
+	\blindtext
+	\section{Test section}
+		\blindtext
+	\section{Check it}
+Texto en español	
+\end{document}