Merge branch 'june-monster-maint' into 'master'

June monster maint

See merge request !73

.editorconfig

+# https://editorconfig.org/
+# https://github.com/editorconfig/editorconfig-vim 
+# https://github.com/editorconfig/editorconfig-emacs 
+
+root = true
+
+[*]
+indent_style = space
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+insert_final_newline = true
+
+[*.py]
+indent_size = 4
+
+[*.rst]
+indent_size = 4
+
+[*.cpp]
+indent_size = 2
+
+[*.hpp]
+indent_size = 2
+
+# There may be one in doc/
+[Makefile]
+indent_style = tab
+
+# https://github.com/microsoft/vscode/issues/1679
+[*.md]
+trim_trailing_whitespace = false

setup.py

@@ -42,6 +42,7 @@ def main():
 
           packages=find_packages(),
 
+          python_requires="~=3.6",
           install_requires=[
               "pytest>=2.3",
               "pytools>=2018.5.2",