Began serious code documentation effort

Enabled the autodoc Sphinx extension and started adding docstrings to
classes, methods, etc.. It's quickly becoming quite interesting...

help/en/developer/core/app.rst

@@ -0,0 +1,5 @@
+core.app
+========
+
+.. automodule:: core.app
+    :members:

help/en/developer/core/directories.rst

@@ -0,0 +1,5 @@
+core.directories
+================
+
+.. automodule:: core.directories
+    :members:

help/en/developer/core/engine.rst

@@ -0,0 +1,7 @@
+core.engine
+===========
+
+.. automodule:: core.engine
+
+.. autoclass:: core.engine.Group
+    :members:

help/en/developer/core/fs.rst

@@ -0,0 +1,5 @@
+core.fs
+=======
+
+.. automodule:: core.fs
+    :members:

help/en/developer/core/gui.rst

@@ -0,0 +1,5 @@
+core.gui
+========
+
+.. automodule:: core.gui
+    :members:

help/en/developer/core/results.rst

@@ -0,0 +1,5 @@
+core.results
+============
+
+.. automodule:: core.results
+    :members:

help/en/developer/index.rst

@@ -44,3 +44,16 @@ a list of matches and returns a list of ``Group`` instances (a ``Group`` is basi
 When a scan is over, the final result (the list of groups from ``get_groups()``) is placed into
 ``app.DupeGuru.results``, which is a ``results.Results`` instance. The ``Results`` instance is where
 all the dupe marking, sorting, removing, power marking, etc. takes place.
+
+API
+---
+
+.. toctree::
+    :maxdepth: 2
+    
+    core/app
+    core/fs
+    core/engine
+    core/directories
+    core/results
+    core/gui

help/en/index.rst

@@ -54,6 +54,6 @@ Contents:
     results
     reprioritize
     faq
-    developer
+    developer/index
     changelog
     credits