Properly handle overwriting values in a wad-level config.

This only was a problem for values that we were geenerating a property
for.

dcc/config.py

@@ -20,6 +20,7 @@ class Base(Command):
         self._config_name = parsed_args.config_name
         self._config = tomlkit.toml_file.TOMLFile(
             self.doom.joinpath(self.config_name)).read()
+
         self._dsda = self._config.get("dsda")
         if self.dsda is None:
             raise Exception(
@@ -28,6 +29,7 @@ class Base(Command):
         for d in ("iwads", "pwads", "demos", "fabricate"):
             self._init_attr([d], d, fn=self.doom.joinpath)
 
+    def finalize(self):
         self._init_attr(["thumbnail", "height"], 720)
         self._init_attr(["thumbnail", "width"], 1280)
         self._init_attr(["thumbnail", "font"], None)

dcc/doom_base.py

@@ -27,6 +27,7 @@ class Wad(dcc.config.Base):
                         self._config[k][sk] = v[sk]
                 else:
                     self._config[k] = v
+        self.finalize()
 
     def run(self, parsed_args):
         self.wad_init(parsed_args)