Bump terra version and prepare release (#217)

* Bump terra version and prepare release

This commit bumps the terra version to 0.7.2 and prepares the changelog
for the new bugfix release.

* Include PR number in changelog

CHANGELOG.rst

@@ -19,6 +19,16 @@ The format is based on `Keep a Changelog`_.
 =============
 
 
+`0.8.1`_ - 2019-05-01
+=====================
+
+Changed
+-------
+
+- Increased the qiskit-terra version to v0.7.2 which includes a fix for the
+  schema validation of backend configuration in Qiskit/qiskit-terra#2258 (#217)
+
+
 `0.8.0`_ - 2019-03-05
 =====================
 
@@ -65,7 +75,8 @@ Added
 
 - First release, includes qiskit-terra and qiskit-aer
 
-.. _UNRELEASED: https://github.com/Qiskit/qiskit-terra/compare/0.8.0...HEAD
+.. _UNRELEASED: https://github.com/Qiskit/qiskit-terra/compare/0.8.1...HEAD
+.. _0.8.1: https://github.com/Qiskit/qiskit/compare/0.8.0...0.8.1
 .. _0.8.0: https://github.com/Qiskit/qiskit/compare/0.7.3...0.8.0
 .. _0.7.3: https://github.com/Qiskit/qiskit/compare/0.7.2...0.7.3
 .. _0.7.2: https://github.com/Qiskit/qiskit/compare/0.7.1...0.7.2

setup.py

@@ -19,7 +19,7 @@
 from setuptools.command.install import install
 from setuptools.command.develop import develop
 
-qiskit_terra = "qiskit_terra==0.7.1"
+qiskit_terra = "qiskit_terra==0.7.2"
 
 requirements = [
     qiskit_terra,
@@ -74,7 +74,7 @@ def run(self):
 
 setup(
     name="qiskit",
-    version="0.8.0",
+    version="0.8.1",
     description="Software for developing quantum computing programs",
     long_description="Qiskit is a software development kit for writing "
                      "quantum computing experiments, programs, and "