chore: release 3.3

- update changes
- update version
diff --git a/documentation/conf.py b/documentation/conf.py
index a03b171..64605a6 100644
--- a/documentation/conf.py
+++ b/documentation/conf.py
@@ -38,16 +38,16 @@
 
 # General information about the project.
 project = u'pySerial'
-copyright = u'2001-2016, Chris Liechti'
+copyright = u'2001-2017, Chris Liechti'
 
 # The version info for the project you're documenting, acts as replacement for
 # |version| and |release|, also used in various other places throughout the
 # built documents.
 #
 # The short X.Y version.
-version = '3.2'
+version = '3.3'
 # The full version, including alpha/beta/rc tags.
-release = '3.2.1'
+release = '3.3'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/documentation/pyserial_api.rst b/documentation/pyserial_api.rst
index 54d2ff3..65eeae5 100644
--- a/documentation/pyserial_api.rst
+++ b/documentation/pyserial_api.rst
@@ -52,7 +52,7 @@
 
         :param float inter_byte_timeout:
             Inter-character timeout, :const:`None` to disable (default).
-            
+
         :param bool exclusive:
             Set exclusive access mode (POSIX only).  A port cannot be opened in 
             exclusive access mode if it is already open in exclusive access mode.
@@ -112,6 +112,7 @@
         .. versionchanged:: 2.5
             *dsrdtr* now defaults to ``False`` (instead of *None*)
         .. versionchanged:: 3.0 numbers as *port* argument are no longer supported
+        .. versionadded:: 3.3 ``exclusive`` flag
 
     .. method:: open()