Fix use of get_type_hints

Should pass class object, rather than class instance. For some reason,
this has only become a problem with Python 3.14, so make sure we're
running CI on newer versions.

Author: ZedThree

.github/workflows/test.yml

@@ -8,7 +8,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.8", "3.9", "3.10", "3.11"]
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
 
     steps:
     - uses: actions/checkout@v3

ford/settings.py

@@ -213,7 +213,7 @@ class ProjectSettings:
     def __post_init__(self):
         self.relative = self.project_url == ""
 
-        field_types = get_type_hints(self)
+        field_types = get_type_hints(ProjectSettings)
 
         for key, value in asdict(self).items():
             default_type = field_types[key]
@@ -270,7 +270,7 @@ def normalise_paths(self, directory=None):
         if directory is None:
             directory = Path.cwd()
         self.directory = Path(directory).absolute()
-        field_types = get_type_hints(self)
+        field_types = get_type_hints(ProjectSettings)
 
         if self.favicon == FAVICON_PATH:
             self.favicon = Path(__file__).parent / FAVICON_PATH