diff --git a/AUTHORS b/AUTHORS
index fe8be767..ab0469e9 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -114,4 +114,5 @@ that much better:
  * Jaime Irurzun
  * Alexandre González
  * Thomas Steinacher
- * Tommi Komulainen
\ No newline at end of file
+ * Tommi Komulainen
+ * Peter Landry
diff --git a/README.rst b/README.rst
index 548737cd..1305b6e9 100644
--- a/README.rst
+++ b/README.rst
@@ -2,6 +2,7 @@
 MongoEngine
 ===========
 :Info: MongoEngine is an ORM-like layer on top of PyMongo.
+:Repository: https://github.com/MongoEngine/mongoengine
 :Author: Harry Marr (http://github.com/hmarr)
 :Maintainer: Ross Lawley (http://github.com/rozza)
 
diff --git a/docs/changelog.rst b/docs/changelog.rst
index 08091acb..c05da946 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -2,8 +2,14 @@
 Changelog
 =========
 
-Changes in 0.6.X
-================
+Changes in 0.6.20
+=================
+- Added support for distinct and db_alias (MongoEngine/mongoengine#59)
+- Improved support for chained querysets when constraining the same fields (hmarr/mongoengine#554)
+- Fixed BinaryField lookup re (MongoEngine/mongoengine#48)
+
+Changes in 0.6.19
+=================
 
 - Added Binary support to UUID (MongoEngine/mongoengine#47)
 - Fixed MapField lookup for fields without declared lookups (MongoEngine/mongoengine#46)
diff --git a/docs/guide/querying.rst b/docs/guide/querying.rst
index a9567e20..14498017 100644
--- a/docs/guide/querying.rst
+++ b/docs/guide/querying.rst
@@ -232,7 +232,7 @@ custom manager methods as you like::
     BlogPost(title='test1', published=False).save()
     BlogPost(title='test2', published=True).save()
     assert len(BlogPost.objects) == 2
-    assert len(BlogPost.live_posts) == 1
+    assert len(BlogPost.live_posts()) == 1
 
 Custom QuerySets
 ================
@@ -243,11 +243,16 @@ a document, set ``queryset_class`` to the custom class in a
 :class:`~mongoengine.Document`\ s ``meta`` dictionary::
 
     class AwesomerQuerySet(QuerySet):
-        pass
+
+        def get_awesome(self):
+            return self.filter(awesome=True)
 
     class Page(Document):
         meta = {'queryset_class': AwesomerQuerySet}
 
+    # To call:
+    Page.objects.get_awesome()
+
 .. versionadded:: 0.4
 
 Aggregation
diff --git a/mongoengine/__init__.py b/mongoengine/__init__.py
index 5f4f7f1d..ea3dd5e6 100644
--- a/mongoengine/__init__.py
+++ b/mongoengine/__init__.py
@@ -12,7 +12,7 @@ from signals import *
 __all__ = (document.__all__ + fields.__all__ + connection.__all__ +
            queryset.__all__ + signals.__all__)
 
-VERSION = (0, 6, 18)
+VERSION = (0, 6, 20)
 
 
 def get_version():
diff --git a/mongoengine/dereference.py b/mongoengine/dereference.py
index f74e224c..637380d6 100644
--- a/mongoengine/dereference.py
+++ b/mongoengine/dereference.py
@@ -34,7 +34,9 @@ class DeReference(object):
 
         doc_type = None
         if instance and instance._fields:
-            doc_type = instance._fields[name].field
+            doc_type = instance._fields[name]
+            if hasattr(doc_type, 'field'):
+                doc_type = doc_type.field
 
             if isinstance(doc_type, ReferenceField):
                 doc_type = doc_type.document_type
diff --git a/mongoengine/fields.py b/mongoengine/fields.py
index 82689929..8e3cf15a 100644
--- a/mongoengine/fields.py
+++ b/mongoengine/fields.py
@@ -1327,7 +1327,7 @@ class UUIDField(BaseField):
         super(UUIDField, self).__init__(**kwargs)
 
     def to_python(self, value):
-        if not self.binary:
+        if not self._binary:
             if not isinstance(value, basestring):
                 value = unicode(value)
             return uuid.UUID(value)
diff --git a/mongoengine/queryset.py b/mongoengine/queryset.py
index 366dd21a..95bb58a4 100644
--- a/mongoengine/queryset.py
+++ b/mongoengine/queryset.py
@@ -765,8 +765,22 @@ class QuerySet(object):
             key = '.'.join(parts)
             if op is None or key not in mongo_query:
                 mongo_query[key] = value
-            elif key in mongo_query and isinstance(mongo_query[key], dict):
-                mongo_query[key].update(value)
+            elif key in mongo_query:
+                if isinstance(mongo_query[key], dict) and isinstance(value, dict):
+                    mongo_query[key].update(value)
+                elif isinstance(mongo_query[key], list):
+                    mongo_query[key].append(value)
+                else:
+                    mongo_query[key] = [mongo_query[key], value]
+
+        for k, v in mongo_query.items():
+            if isinstance(v, list):
+                value = [{k:val} for val in v]
+                if '$and' in mongo_query.keys():
+                    mongo_query['$and'].append(value)
+                else:
+                    mongo_query['$and'] = value
+                del mongo_query[k]
 
         return mongo_query
 
@@ -1152,8 +1166,10 @@ class QuerySet(object):
 
         .. versionadded:: 0.4
         .. versionchanged:: 0.5 - Fixed handling references
+        .. versionchanged:: 0.6 - Improved db_field refrence handling
         """
-        return self._dereference(self._cursor.distinct(field), 1)
+        return self._dereference(self._cursor.distinct(field), 1,
+                                 name=field, instance=self._document)
 
     def only(self, *fields):
         """Load only a subset of this document's fields. ::
@@ -1866,6 +1882,17 @@ class QuerySet(object):
 
 
 class QuerySetManager(object):
+    """
+    The default QuerySet Manager.
+
+    Custom QuerySet Manager functions can extend this class and users can
+    add extra queryset functionality.  Any custom manager methods must accept a
+    :class:`~mongoengine.Document` class as its first argument, and a
+    :class:`~mongoengine.queryset.QuerySet` as its second argument.
+
+    The method function should return a :class:`~mongoengine.queryset.QuerySet`
+    , probably the same one that was passed in, but modified in some way.
+    """
 
     get_queryset = None
 
diff --git a/python-mongoengine.spec b/python-mongoengine.spec
index 4dfbeccc..4e803263 100644
--- a/python-mongoengine.spec
+++ b/python-mongoengine.spec
@@ -5,7 +5,7 @@
 %define srcname mongoengine
 
 Name:           python-%{srcname}
-Version:        0.6.18
+Version:        0.6.20
 Release:        1%{?dist}
 Summary:        A Python Document-Object Mapper for working with MongoDB
 
diff --git a/tests/test_fields.py b/tests/test_fields.py
index c4013c10..a6eaca43 100644
--- a/tests/test_fields.py
+++ b/tests/test_fields.py
@@ -283,6 +283,7 @@ class FieldTest(unittest.TestCase):
         uu = uuid.uuid4()
         Person(api_key=uu).save()
         self.assertEqual(1, Person.objects(api_key=uu).count())
+        self.assertEqual(uu, Person.objects.first().api_key)
 
         person = Person()
         valid = (uuid.uuid4(), uuid.uuid1())
@@ -307,6 +308,7 @@ class FieldTest(unittest.TestCase):
         uu = uuid.uuid4()
         Person(api_key=uu).save()
         self.assertEqual(1, Person.objects(api_key=uu).count())
+        self.assertEqual(uu, Person.objects.first().api_key)
 
         person = Person()
         valid = (uuid.uuid4(), uuid.uuid1())
diff --git a/tests/test_queryset.py b/tests/test_queryset.py
index b4ae805b..8f846ea6 100644
--- a/tests/test_queryset.py
+++ b/tests/test_queryset.py
@@ -827,7 +827,11 @@ class QuerySetTest(unittest.TestCase):
     def test_filter_chaining(self):
         """Ensure filters can be chained together.
         """
+        class Blog(Document):
+            id = StringField(unique=True, primary_key=True)
+
         class BlogPost(Document):
+            blog = ReferenceField(Blog)
             title = StringField()
             is_published = BooleanField()
             published_date = DateTimeField()
@@ -836,13 +840,24 @@ class QuerySetTest(unittest.TestCase):
             def published(doc_cls, queryset):
                 return queryset(is_published=True)
 
-        blog_post_1 = BlogPost(title="Blog Post #1",
+        Blog.drop_collection()
+        BlogPost.drop_collection()
+
+        blog_1 = Blog(id="1")
+        blog_2 = Blog(id="2")
+        blog_3 = Blog(id="3")
+
+        blog_1.save()
+        blog_2.save()
+        blog_3.save()
+
+        blog_post_1 = BlogPost(blog=blog_1, title="Blog Post #1",
                                is_published = True,
                                published_date=datetime(2010, 1, 5, 0, 0 ,0))
-        blog_post_2 = BlogPost(title="Blog Post #2",
+        blog_post_2 = BlogPost(blog=blog_2, title="Blog Post #2",
                                is_published = True,
                                published_date=datetime(2010, 1, 6, 0, 0 ,0))
-        blog_post_3 = BlogPost(title="Blog Post #3",
+        blog_post_3 = BlogPost(blog=blog_3, title="Blog Post #3",
                                is_published = True,
                                published_date=datetime(2010, 1, 7, 0, 0 ,0))
 
@@ -856,7 +871,14 @@ class QuerySetTest(unittest.TestCase):
             published_date__lt=datetime(2010, 1, 7, 0, 0 ,0))
         self.assertEqual(published_posts.count(), 2)
 
+
+        blog_posts = BlogPost.objects
+        blog_posts = blog_posts.filter(blog__in=[blog_1, blog_2])
+        blog_posts = blog_posts.filter(blog=blog_3)
+        self.assertEqual(blog_posts.count(), 0)
+
         BlogPost.drop_collection()
+        Blog.drop_collection()
 
     def test_ordering(self):
         """Ensure default ordering is applied and can be overridden.
@@ -2277,6 +2299,28 @@ class QuerySetTest(unittest.TestCase):
 
         self.assertEquals(Foo.objects.distinct("bar"), [bar])
 
+    def test_distinct_handles_references_to_alias(self):
+        register_connection('testdb', 'mongoenginetest2')
+
+        class Foo(Document):
+            bar = ReferenceField("Bar")
+            meta = {'db_alias': 'testdb'}
+
+        class Bar(Document):
+            text = StringField()
+            meta = {'db_alias': 'testdb'}
+
+        Bar.drop_collection()
+        Foo.drop_collection()
+
+        bar = Bar(text="hi")
+        bar.save()
+
+        foo = Foo(bar=bar)
+        foo.save()
+
+        self.assertEquals(Foo.objects.distinct("bar"), [bar])
+
     def test_custom_manager(self):
         """Ensure that custom QuerySetManager instances work as expected.
         """