Have Pytest ignore PyInstaller hook directory.

Testing it would require PyInstaller which seems unnecessary.

Author: HexDecimal

setup.cfg

@@ -6,7 +6,13 @@ pyinstaller40 =
 test=pytest
 
 [tool:pytest]
-addopts=tcod/ tests/ --doctest-modules --cov=tcod --capture=sys
+addopts=
+    tcod/
+    tests/
+    --doctest-modules
+    --cov=tcod
+    --capture=sys
+    --ignore=tcod/__pyinstaller
 filterwarnings =
     ignore::DeprecationWarning:tcod.libtcodpy
     ignore::PendingDeprecationWarning:tcod.libtcodpy