Update project setup.

.coveragerc

@@ -1,19 +1,29 @@
+[run]
+branch = True
+timid = True
+source =
+    .
+omit =
+    .tox/*
+    /usr/*
+    */tmp*
+    setup.py
+
 [report]
 exclude_lines =
-    # Don't complain about defensive assertions
-    raise NotImplementedError
-    raise AssertionError
+    # Have to re-enable the standard pragma
+    \#\s*pragma: no cover
 
-    # Don't complain about non-runnable code
-    if __name__ == .__main__.:
+    # Don't complain if tests don't hit defensive assertion code:
+    ^\s*raise AssertionError\b
+    ^\s*raise NotImplementedError\b
+    ^\s*return NotImplemented\b
+    ^\s*raise$
 
-omit =
-    /usr/*
-    py_env/*
-    */__init__.py
+    # Don't complain if non-runnable code isn't run:
+    ^if __name__ == ['"]__main__['"]:$
 
-    # Ignore test coverage
-    tests/*
+[html]
+directory = coverage-html
 
-    # Don't complain about our pre-commit file
-    pre-commit.py
+# vim:ft=dosini