Small fixes to dev environment

.editorconfig

@@ -0,0 +1,21 @@
+# http://editorconfig.org
+
+root = true
+
+[*]
+indent_style = space
+indent_size = 4
+trim_trailing_whitespace = true
+insert_final_newline = true
+charset = utf-8
+end_of_line = lf
+
+[*.bat]
+indent_style = tab
+end_of_line = crlf
+
+[LICENSE]
+insert_final_newline = false
+
+[Makefile]
+indent_style = tab

Makefile

@@ -46,7 +46,7 @@ profile:
 	$(BIN)python -O -m scripts.profile
 
 docs:
-	cd docs; make html
+	cd docs; make SPHINXBUILD='../$(BIN)python -msphinx' html
 
 tox:
 	$(BIN)tox
@@ -68,7 +68,7 @@ uninstall:
 	$(BIN)pip uninstall suffix_tree
 
 clean:
-	-rm -rf dist build *.egg-info
+	-rm -rf dist build htmlcov .mypy_cache .pytest_cache .tox *.egg-info
 	-rm docs/_images/badge*.svg
 	-rm *~ .*~ pylintgraph.dot
 	-find . -name __pycache__ -type d -exec rm -r "{}" \;

requirements-dev.txt

@@ -2,6 +2,7 @@ black
 blackdoc
 build
 coverage[toml]
+hatchling
 mypy
 pydocstyle
 pylint

tests/conftest.py

@@ -52,6 +52,7 @@ def __init__(self, option_strings, dest, nargs=None, **kwargs):
             super().__init__(option_strings, dest, **kwargs)
 
         def __call__(self, parser, namespace, values, option_string=None):
+            """This is called if the --debug-mode option is passed to pytest."""
             if option_string in self.option_strings:
                 util.DEBUG = True
                 util.DEBUG_LABELS = True
@@ -60,7 +61,9 @@ def __call__(self, parser, namespace, values, option_string=None):
 
 
 def pytest_addoption(parser):
-    parser.addoption("--performance", action="store_true", help="run performance tests")
+    parser.addoption(
+        "--performance", action="store_true", help="run performance tests"
+    )
     parser.addoption(
         "--debug-mode", action=DebugAction, help="turn on DEBUG mode while testing"
     )