Remove regex check and download "Nightly" CastXML

Stop trying to check the version with a regex and instead copy the
"Nightly" version of castxml available from data.kitware.com.
This Nightly version is master on October 14, 2020

Author: josephsnyder

.github/workflows/tests.yml

@@ -75,11 +75,11 @@ jobs:
       - name: Setup castxml for Linux
         if: matrix.os == 'ubuntu-18.04' && matrix.castxml == 'castxml'
         run: |
-          wget -q -O - https://data.kitware.com/api/v1/file/hashsum/sha512/f43ef30267c850872cf1e8ea8594c5dc6a1beb7c343d63875662ee7c648dac4f9214c915499ef2e1148f2b5f866e4c518ca1a21fb5055baba7d62f4f69097ba0/download | tar zxf - -C ~/
+          wget -q -O - https://data.kitware.com/api/v1/file/hashsum/sha512/b580374e48d4df68f8ebef6d0e71cd8cc3f2dfa28f0090e07cc043d11cee308aeea480092fe2e93f2d4c58f822a5c013c1c7121964372d28ee4069949a378b4c/download | tar zxf - -C ~/
       - name: Setup castxml for Mac
         if: matrix.os == 'macos-latest'
         run: |
-          wget -q -O - https://data.kitware.com/api/v1/file/hashsum/sha512/88c9b5954ca7417f7b519f3006dc6fe4bd194af0837168edc30007a41eaae6d4eee97cef2a72747432af14941c7f60333b77c25e208b2540dcde2d61e0d0e6f3/download | tar zxf - -C ~/
+          wget -q -O - https://data.kitware.com/api/v1/file/hashsum/sha512/e5962372508abd295f8a8110a20142bcbd93c235f72afba34b0abb3918a623f27465a7674b5532320e770f56fddb99019f5c47b254cea9f862a2df35630c2879/download | tar zxf - -C ~/
       - name: Setup castxml config
         if: matrix.compiler == 'gcc' && matrix.version == '7'
         run: mv unittests/configs/gcc7.cfg unittests/xml_generator.cfg;

unittests/test_comments.py

@@ -3,8 +3,6 @@
 # Distributed under the Boost Software License, Version 1.0.
 # See http://www.boost.org/LICENSE_1_0.txt
 
-import re
-import subprocess
 import unittest
 
 from . import parser_test_case
@@ -40,20 +38,6 @@ def test(self):
         if self.config.castxml_epic_version != 1:
             # Run this test only with castxml epic version == 1
             return
-        # Try to capture CastXML's patch version: 0.3.<###>
-        # If the version is <= 0.3.6, return as the functionality doesn't exist
-        # Else, continue on with the test.
-        rtn = subprocess.run(
-            [self.config.xml_generator_path, "--version"],
-            stdout=subprocess.PIPE
-        )
-        version_regex = re.compile(
-            b"castxml version 0.3.(?P<patch_ver>[0-9]+)"
-        )
-        reg_match = re.match(version_regex, rtn.stdout)
-        if reg_match:
-            if int(reg_match.group("patch_ver")) <= 6:
-                return
         tnamespace = self.global_ns.namespace("comment")
 
         self.assertIn("comment", dir(tnamespace))