Vendor the Version package, use it instead of distutils (#2659)

* Vendor the Version package, use it instead of distutils

* add packaging license

licences/PACKAGING_LICENSE

@@ -0,0 +1,23 @@
+Copyright (c) Donald Stufft and individual contributors.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+    1. Redistributions of source code must retain the above copyright notice,
+       this list of conditions and the following disclaimer.
+
+    2. Redistributions in binary form must reproduce the above copyright
+       notice, this list of conditions and the following disclaimer in the
+       documentation and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

seaborn/_core.py

@@ -6,7 +6,6 @@
 from collections.abc import Iterable, Sequence, Mapping
 from numbers import Number
 from datetime import datetime
-from distutils.version import LooseVersion
 
 import numpy as np
 import pandas as pd
@@ -15,6 +14,7 @@
 from ._decorators import (
     share_init_params_with_map,
 )
+from .external.version import Version
 from .palettes import (
     QUAL_PALETTES,
     color_palette,
@@ -1252,7 +1252,7 @@ def _attach(
                     if scale is True:
                         set_scale("log")
                     else:
-                        if LooseVersion(mpl.__version__) >= "3.3":
+                        if Version(mpl.__version__) >= Version("3.3"):
                             set_scale("log", base=scale)
                         else:
                             set_scale("log", **{f"base{axis}": scale})