cls: minor fixes; sample: Use biblatex instead of bibtex

.gitattributes

 *.pdf filter=lfs diff=lfs merge=lfs -text
-mlu-siegel-transparent.png filter=lfs diff=lfs merge=lfs -text
+*.png filter=lfs diff=lfs merge=lfs -text

mluthesis.cls

@@ -8,7 +8,7 @@
 \ProvidesClass{mluthesis}[2020/04/20 v1.0]
 
 % Load base class (scrbook).
-\LoadClass[a4paper,12pt,oneside,bibliography=totoc,chapterprefix=true,appendixprefix=true]{scrbook}
+\LoadClass[a4paper,12pt,oneside,bibliography=nottotoc,chapterprefix=true,appendixprefix=true]{scrbook}
 
 % Encoding:
 \RequirePackage[utf8]{inputenc}
@@ -274,7 +274,7 @@
 % Pass default options to hyperref class, if loaded.
 \newcommand{\hyperoptions}{
   colorlinks=false,
-  pageanchor=false
+  pageanchor=true
 }
 \newcommand{\hyperpdfoptions}{
   pdftex,

sample.tex

 \documentclass[english]{mluthesis} % Supported languages: english, german
 
-\usepackage{hyperref}
-\usepackage{natbib, doi}
-\usepackage{graphicx}
 \usepackage{amsmath}
 \usepackage{csquotes}
 \MakeOuterQuote{"}
+\usepackage{graphicx}
+\usepackage{hyperref}
+
+\usepackage{biblatex}
+\addbibresource{sample.bib}
+\usepackage{doi}
 
 \usepackage{lipsum} % for lorem ipsum sample text
 
@@ -28,7 +31,7 @@
 
 % This is a list, seperated with commata.
 % If you only put one entry, the numbers will be omitted.
-\ThesisSetSupervisors{{Prof. Professor McProfessorface}, {Dr. Noonien Soong}}
+\ThesisSetSupervisors{{Prof. McProfessorface},{Dr. Noonien Soong}}
 
 % This puts the MLU sigil on the title page.
 \ThesisSetLogo{\includegraphics[width=\linewidth]{mlu-siegel-transparent.png}}
@@ -71,8 +74,7 @@
 \lipsum[5-7]
 
 \nocite{*}
-\bibliographystyle{plainnat}
-\bibliography{sample} % uses file sample.bib
+\printbibliography
 
 \declaration