add more documentation: API doc

doc/conf.py

@@ -21,9 +21,13 @@ release = damaris.__version__
 
 extensions = [
     'sphinx.ext.autodoc',
+    'sphinx.ext.autosummary',
     'sphinx.ext.napoleon',
+    'sphinx.ext.viewcode',
     'sphinxcontrib.bibtex',
     ]
+
+autosummary_generate = True
 bibtex_bibfiles = ['bibdesk_db.bib']
 bibtex_bibstyles = ['numeric']
 bibtex_citestyle = 'numeric'