switch to xelatex for building latexpdf as it supports more unicode

.circleci/config.yml

@@ -101,7 +101,7 @@ docs: &docs
         name: install latexpdf dependencies
         command: |
           sudo apt-get update
-          sudo apt-get install latexmk tex-gyre texlive-fonts-extra
+          sudo apt-get install latexmk tex-gyre texlive-fonts-extra texlive-xetex xindy
     - run:
         name: run tox
         command: python -m tox run -r

docs/conf.py

@@ -1,5 +1,3 @@
-# -*- coding: utf-8 -*-
-#
 # <PROJECT_NAME> documentation build configuration file, created by
 # sphinx-quickstart on Thu Oct 16 20:43:24 2014.
 #
@@ -195,6 +193,8 @@ htmlhelp_basename = "<MODULE_NAME>docs"
 
 # -- Options for LaTeX output ---------------------------------------------
 
+latex_engine = "xelatex"
+
 latex_elements = {
     # The paper size ('letterpaper' or 'a4paper').
     #'papersize': 'letterpaper',

setup.py

@@ -1,5 +1,4 @@
 #!/usr/bin/env python
-# -*- coding: utf-8 -*-
 from setuptools import (
     find_packages,
     setup,