feat(combined receiver): Clarified the intent of the combined receiver

This is mostly to trigger a release so that all the other libraries have access to the dictionary containing receivers. Improved the documentation in the process.

honeybee_radiance_folder/folder.py

@@ -519,6 +519,9 @@ def combined_receivers(self, folder='receivers', auto_mtx_path=True):
             folder: A path of the target folder to write files to (default: 'receivers').
             auto_mtx_path: If set to True, then the path of the view matrices will be
                 specified automatically.
+        Returns:
+            A dictionary containing grid identifiers as keys and the receiver rad files
+            as values.
         """
         grids = self.grid_data_all()
         apt_group_folder = self.aperture_group_folder(full=False)

honeybee_radiance_folder/folderutil.py

@@ -425,6 +425,8 @@ def combined_receiver(grid_name, apt_group_folder, apt_groups, target_folder,
         target_folder: A path of the target folder to write files to.
         add_output_header: If set to True, a header will be added to redirect the
             generated view matrix to the path specified through the "o= .." option.
+    Returns:
+        The path of the file that was written out as the combined receiver.
     """
     file_name = '%s..receiver.rad' % grid_name
     apt_group_folder = apt_group_folder.replace('\\', '/')