3 files changed, 33 insertions, 1 deletions
diff --git a/CHANGES b/CHANGES
index 0522ffb..017c69f 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,9 @@
+Version 5.12.0
+--------------
+
+* Empty and otherwise falsy (None, False, 0) DSN values are now assumed
+  to be equivalent to no DSN being provided.
+
 Version 5.11.2
 --------------
 
diff --git a/raven/context.py b/raven/context.py
index b1c3d7b..6fd7891 100644
--- a/raven/context.py
+++ b/raven/context.py
@@ -7,12 +7,38 @@ raven.context
 """
 from __future__ import absolute_import
 
+import time
+
 from collections import Mapping, Iterable
+from datetime import datetime
 from threading import local
 
 from raven._compat import iteritems
 
 
+class BreadcrumbBuffer(object):
+
+    def __init__(self, limit=100):
+        self.buffer = []
+        self.limit = limit
+
+    def record(self, type, data=None, timestamp=None):
+        if timestamp is None:
+            timestamp = time.time()
+        elif isinstance(timestamp, datetime):
+            timestamp = datetime
+
+        self.buffer.append({
+            'type': type,
+            'timestamp': timestamp,
+            'data': data or {},
+        })
+        del self.buffer[:-self.limit]
+
+    def clear(self):
+        del self.buffer[:]
+
+
 class Context(local, Mapping, Iterable):
     """
     Stores context until cleared.
diff --git a/setup.py b/setup.py
index 77dd5a5..4e9e32b 100755
--- a/setup.py
+++ b/setup.py
@@ -97,7 +97,7 @@ class PyTest(TestCommand):
 
 setup(
     name='raven',
-    version='5.11.2',
+    version='5.12.0',
     author='Sentry',
     author_email='hello@getsentry.com',
     url='https://github.com/getsentry/raven-python',