Update development requirements (xmlschema~=1.0.13)

requirements-dev.txt

@@ -3,6 +3,6 @@ setuptools
 tox
 coverage
 lxml
-xmlschema>=1.0.9
+xmlschema>=1.0.13
 Sphinx
 -e .

setup.py

@@ -19,7 +19,7 @@ setup(
     packages=['elementpath'],
     author='Davide Brunato',
     author_email='brunato@sissa.it',
-    url='https://github.com/brunato/elementpath',
+    url='https://github.com/sissaschool/elementpath',
     keywords=['XPath', 'XPath2', 'Pratt-parser', 'ElementTree', 'lxml'],
     license='MIT',
     description='XPath 1.0/2.0 parsers and selectors for ElementTree and lxml',
@@ -33,7 +33,6 @@ setup(
         'Operating System :: OS Independent',
         'Programming Language :: Python',
         'Programming Language :: Python :: 2.7',
-        'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: 3.7',

tox.ini

@@ -11,7 +11,7 @@ toxworkdir = {homedir}/.tox/elementpath
 [testenv]
 deps =
     lxml
-    xmlschema~=1.0.9
+    xmlschema~=1.0.13
     docs: Sphinx
     flake8: flake8
     coverage: coverage
@@ -22,7 +22,7 @@ whitelist_externals = make
 commands = python tests/test_elementpath.py
 
 [testenv:py38]
-deps = xmlschema~=1.0.9
+deps = xmlschema~=1.0.13
 commands = python -m unittest
 
 [testenv:docs]