Merge pull request #20 from RazerM/master

Release 0.1.0

Author: RazerM

docs/source/history.rst

@@ -4,3 +4,13 @@ Release history
 .. currentmodule:: outcome
 
 .. towncrier release notes start
+
+Outcome 0.1.0 (2018-07-10)
+--------------------------
+
+Features
+~~~~~~~~
+
+- An Outcome may only be unwrapped or sent once.
+
+  Attempting to do so a second time will raise an :class:`AlreadyUsedError`. (`#7 <https://github.com/python-trio/outcome/issues/7>`__)