bumping version 0.12.0 => 0.12.1

Author: Emanuele Palazzetti

ddtrace/__init__.py

@@ -4,7 +4,7 @@
 from .tracer import Tracer
 from .settings import Config
 
-__version__ = '0.12.0'
+__version__ = '0.12.1'
 
 # a global tracer instance with integration settings
 tracer = Tracer()