Added base of FSM. Markup constructor and small refactoring

docs2/dispatcher/class_based_handlers/base.rst

@@ -6,7 +6,7 @@ BaseHandler
 
 Base handler is generic abstract class and should be used in all other class-based handlers.
 
-Import: :code:`from aiogram.hanler import BaseHandler`
+Import: :code:`from aiogram.handler import BaseHandler`
 
 By default you will need to override only method :code:`async def handle(self) -> Any: ...`
 

docs2/dispatcher/class_based_handlers/callback_query.rst

@@ -1,27 +1,9 @@
-====================
+####################
 CallbackQueryHandler
-====================
-
-There is base class for callback query handlers.
-
-Simple usage
-============
-.. code-block:: python
-
-    from aiogram.handlers import CallbackQueryHandler
-
-    ...
-
-    @router.callback_query()
-    class MyHandler(CallbackQueryHandler):
-        async def handle(self) -> Any: ...
+####################
 
 
-Extension
-=========
-
-This base handler is subclass of :ref:`BaseHandler <cbh-base-handler>` with some extensions:
-
-- :code:`self.from_user` is alias for :code:`self.event.from_user`
-- :code:`self.message` is alias for :code:`self.event.message`
-- :code:`self.callback_data` is alias for :code:`self.event.data`
+.. automodule:: aiogram.dispatcher.handler.callback_query
+    :members:
+    :member-order: bysource
+    :undoc-members: True

docs2/dispatcher/class_based_handlers/chat_member.rst

@@ -0,0 +1,28 @@
+=================
+ChatMemberHandler
+=================
+
+There is base class for chat member updated events.
+
+Simple usage
+============
+
+.. code-block:: python
+
+    from aiogram.handlers import ChatMemberHandler
+
+    ...
+
+    @router.chat_member()
+    @router.my_chat_member()
+    class MyHandler(ChatMemberHandler):
+        async def handle(self) -> Any: ...
+
+
+Extension
+=========
+
+This base handler is subclass of :ref:`BaseHandler <cbh-base-handler>` with some extensions:
+
+- :code:`self.chat` is alias for :code:`self.event.chat`
+