Use plain copy of packaging instead of submodule

.gitmodules

@@ -1,3 +0,0 @@
-[submodule "src/multiple_choice/packaging"]
-	path = src/multiple_choice/packaging
-	url = https://github.com/pypa/packaging

README.md

@@ -58,3 +58,5 @@ Volker Umpfenbach contributed a change that allows to customize how the question
 He also provided the code to calculate and display the percentage of correctly answered items per question.
 
 Shoutout to [3ter](https://github.com/3ter) for his contributions that improve card initialization and checkbox handling.
+
+This add-on uses the [packaging](https://packaging.pypa.io/en/latest/) library.

docs/ankiweb.html

@@ -59,6 +59,8 @@
 
 Shoutout to <a href="https://github.com/3ter">3ter</a> for his contributions that improve card initialization and checkbox handling.
 
+This add-on uses the <a href="https://packaging.pypa.io/en/latest/">packaging</a> library.
+
 <b>SUPPORT</b>
 
 Please use the <a href="https://github.com/zjosua/anki-mc/issues">issue tracker</a> on GitHub if you run into any issues.

src/multiple_choice/__init__.py

@@ -35,7 +35,7 @@
 from aqt import gui_hooks, mw
 
 from .config import *
-from .packaging.packaging import version
+from .packaging import version
 from .template import *
 
 def getOrCreateModel():

src/multiple_choice/config.py

@@ -40,12 +40,12 @@
 from aqt import mw
 
 # Compare semantic version: https://stackoverflow.com/a/11887885
-from .packaging.packaging import version
+from .packaging import version
 
 # default configurations
 # TODO: update version number before release
-default_conf_local = {'version': "2.4.0"}
-default_conf_syncd = {'version': "2.4.0"}
+default_conf_local = {'version': "2.4.1"}
+default_conf_syncd = {'version': "2.4.1"}
 
 def getSyncedConfig():
     # Synced preferences

src/multiple_choice/packaging/__about__.py

@@ -0,0 +1,26 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+__all__ = [
+    "__title__",
+    "__summary__",
+    "__uri__",
+    "__version__",
+    "__author__",
+    "__email__",
+    "__license__",
+    "__copyright__",
+]
+
+__title__ = "packaging"
+__summary__ = "Core utilities for Python packages"
+__uri__ = "https://github.com/pypa/packaging"
+
+__version__ = "20.10.dev0"
+
+__author__ = "Donald Stufft and individual contributors"
+__email__ = "[email protected]"
+
+__license__ = "BSD-2-Clause or Apache-2.0"
+__copyright__ = "2014-2019 %s" % __author__

src/multiple_choice/packaging/__init__.py

@@ -0,0 +1,25 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from .__about__ import (
+    __author__,
+    __copyright__,
+    __email__,
+    __license__,
+    __summary__,
+    __title__,
+    __uri__,
+    __version__,
+)
+
+__all__ = [
+    "__title__",
+    "__summary__",
+    "__uri__",
+    "__version__",
+    "__author__",
+    "__email__",
+    "__license__",
+    "__copyright__",
+]

src/multiple_choice/packaging/_structures.py

@@ -0,0 +1,67 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+
+class InfinityType:
+    def __repr__(self) -> str:
+        return "Infinity"
+
+    def __hash__(self) -> int:
+        return hash(repr(self))
+
+    def __lt__(self, other: object) -> bool:
+        return False
+
+    def __le__(self, other: object) -> bool:
+        return False
+
+    def __eq__(self, other: object) -> bool:
+        return isinstance(other, self.__class__)
+
+    def __ne__(self, other: object) -> bool:
+        return not isinstance(other, self.__class__)
+
+    def __gt__(self, other: object) -> bool:
+        return True
+
+    def __ge__(self, other: object) -> bool:
+        return True
+
+    def __neg__(self: object) -> "NegativeInfinityType":
+        return NegativeInfinity
+
+
+Infinity = InfinityType()
+
+
+class NegativeInfinityType:
+    def __repr__(self) -> str:
+        return "-Infinity"
+
+    def __hash__(self) -> int:
+        return hash(repr(self))
+
+    def __lt__(self, other: object) -> bool:
+        return True
+
+    def __le__(self, other: object) -> bool:
+        return True
+
+    def __eq__(self, other: object) -> bool:
+        return isinstance(other, self.__class__)
+
+    def __ne__(self, other: object) -> bool:
+        return not isinstance(other, self.__class__)
+
+    def __gt__(self, other: object) -> bool:
+        return False
+
+    def __ge__(self, other: object) -> bool:
+        return False
+
+    def __neg__(self: object) -> InfinityType:
+        return Infinity
+
+
+NegativeInfinity = NegativeInfinityType()