Cleanup: take advantage of pathlib

* Use / syntax for concating pathlib paths in tests
* Use .name for getting last component of pathlib path

blenderpack.py

@@ -50,7 +50,7 @@ def extract_blinfo(path: pathlib.Path) -> dict:
 
     source = None
     # get last component of path
-    addon_name = path.parts[-1]
+    addon_name = path.name
 
     if path.is_dir():
         with open(path / '__init__.py', 'r') as f:
@@ -87,7 +87,7 @@ def make_repo(repopath: pathlib.Path):
 
     for addon_path in repopath.iterdir():
         package_datum = {}
-        addon = addon_path.parts[-1]
+        addon = addon_path.name
 
         try:
             bl_info = extract_blinfo(addon_path)