Update the version to 1.2.0 + describe changes. (#8)

ChangeLog.md

diff --git a/ChangeLog.md b/ChangeLog.md
index 63da2a5..55d9f52 100644
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,3 +1,8 @@
+## 1.2.0
+
+* Introduced `add_reserved_port()` and `return_port()` APIs to allow ports to
+  be recycled and allow users to bring ports of their own.
+
 ## 1.1.1
 
 * Changed default port range to 15000-24999 to avoid ephemeral ports.

setup.py

diff --git a/setup.py b/setup.py
index 161d8a3..77c5f8f 100644
--- a/setup.py
+++ b/setup.py
@@ -33,7 +33,7 @@
 
     distutils.core.setup(
         name='portpicker',
-        version='1.1.1',
+        version='1.2.0',
         description='A library to choose unique available network ports.',
         long_description=textwrap.dedent("""\
           Portpicker provides an API to find and return an available network
@@ -58,6 +58,7 @@
          'Programming Language :: Python :: 3.3',
          'Programming Language :: Python :: 3.4',
          'Programming Language :: Python :: 3.5',
+         'Programming Language :: Python :: 3.6',
          'Programming Language :: Python :: Implementation :: CPython',
          'Programming Language :: Python :: Implementation :: Jython',
          'Programming Language :: Python :: Implementation :: PyPy'])