Merge branch 'master' of ssh://ssh.hesge.ch:10572/orestis.malaspin/math_tech_info

.gitlab-ci.yml

-image: omalaspinas/pandoc:latest
+image: omalaspinas/c_pandoc:latest
 
 variables:
   GIT_SUBMODULE_STRATEGY: recursive

Makefile

-STYLES := css/tufte-css/tufte.css \
-	css/pandoc.css \
-	css/pandoc-solarized.css \
-	css/tufte-extra.css
-
 OPTIONS = --toc
 OPTIONS += --filter=pandoc-numbering
 OPTIONS += --filter=pandoc-crossref
 
 PDFOPTIONS = --highlight-style kate
-PDFOPTIONS += --pdf-engine pdflatex
+PDFOPTIONS += --pdf-engine xelatex 
 PDFOPTIONS += --number-sections
 PDFOPTIONS += --template=./default.latex