added initial changelog. refers to #326

Author: erickvermot

CHANGELOG

@@ -0,0 +1,163 @@
+##########
+Change log
+##########
+
+All notable changes to the python-openflow project will be documented in this
+file.
+
+
+[Unreleased]
+************
+Added
+=====
+Changed
+=======
+
+
+[2017.1.b1] - "bethania" beta1 - 2017-24-03
+*******************************************
+Added
+=====
+    - OF v0x04 - 1.3.5 - version support
+
+Changed
+=======
+    2017-24-03
+        - v0x04
+            - complete reimplementation without inheritance from v0x01
+            - multiple Tests improvements
+        - v0x01 - Numerous Fixes.
+        - Enable Openflow 1.3 in install script
+        - Improved multipart structures
+    2017/01/7
+        - Multiple Tests improvements
+            - Tests for 0x04
+            - OF v0x04 1.3.0 - Compliance fixes
+            - Adding test_helper for v0x04
+            - Updating tests of TableStats to use TestStruct.
+            - Improved tests and StatsReply.
+            - Run unit tests first, before doctest and linter
+        - New inheritance model, MetaStruct refactored
+        - Use of python3.6 class atribute order preservation
+    2017/01/11
+        - change of metaclass "MetaStruct" for improved inheritance application.
+        - Only Python 3.6 in CI
+        - improved docs organization
+        - sdded support to AggregationStats and FlowStats
+    2016/10/25
+        - update linter config
+        - statsRequest and reply packing/unpacking
+        - added installation process from PyPI and Source Code.
+        - fixed tests and basic_types.py
+        - unittest TestStruct refactoring
+    2016/09/14
+        - [v0x04] Adding multipart reply and request messages and tests
+        - Numerous 0x04 implementations
+    2016/09/10
+        - Improved travis config file
+        - multiple fixes on src and tests of v0x01
+        - Adding constants files to manage constants
+        - Moving foundation module to pyof root folder (same with tests)
+    2016/09/2
+        Improved versioning
+
+[2016.1.a2] - alpha2 - 2016-11-09
+*********************************
+Changed
+=======
+    2016-11-09
+        - Enum fixes
+        - detailed unpack error messages
+        - importing classes instead of modules
+    2016/07/25
+        - lint fixes for documentation automation
+    2016/07/15
+        - pip install support
+
+[2016.1.a1] - alpha1 - 2016-06-08
+*********************************
+Changed
+=======
+    2016-06-08
+        - many doc and docstrings fixes and enhancements
+            - from markdown to restructuredtext
+            - doctests
+        - pypi
+        - code optimisations.
+        - many unittests added
+        - Pack, Unpack and GenericType refactor.
+        - added GenericBitMask class
+        - improved MetaBitMask class so the BitMask classes can behave like enums
+        - python3 compliance on metastruct inheritance declaration
+        - revision of bitmasks and enums
+        - fixes on enums and GenericStruct inheritance
+        - object equality comparison on Generic Types and Structs
+    2016/05/31
+        - Refactor in order to accept python basic types as messages attributes.
+        - The messages type conversion during the pack operation.
+        - better documentation
+        - Multiple Fixes
+            - Fixing GenericMessage pack method.
+        - Added ConstantTypeList to classes
+        - added BinaryData into packet in and out
+        - Added ListOf* classes
+    2016/05/20
+        - Added new basic types and new exceptions
+        - Changed message types from GenericStruct to GenericMessage
+        - Added new exceptions
+        - Added FeaturesReply Class
+        - Call validate on pack
+        - Fixes Package setup
+    2016/05/11
+        - added basic sphinx structure
+    2016/05
+        - new workflow for the project
+            - Added explanation and figures to illustrate the workflow.
+            - Added a special workflow to hotfix and security fix.
+        - better readme and contribute and hacking
+            - added a test badge to readme
+            - update LICENSE
+        - Numerous Tests improvements
+            - Enable test on setup with setuptools
+            - Added some files with OpenFlow binary data for testing
+        - added Port Status messages class and enums definitions
+        - added vendor message file and class implementation
+    2016/04/13
+        - Recode to transform the project into a Python Project
+        - multiple stats messages implementations
+        - added requirements file - no requirement up to here.
+        - improvements to project structure
+        - added Project Structure section on README
+    2016/04/11
+        - pack / unpack refactoring for compliance with OF v0x01
+        - added unit tests
+    2016/04/5
+        - docstrings documentation improvements
+        - Test restructure
+        - Added MIT License
+        - several compile fixes.
+        - package and imports structure refactoring.
+        - Added classes for flow statistics.
+    2016/03/30
+        - added classes for Exception Handling improvements
+        - refactoring for use of python3 Enum class
+    2016/03/22
+        - Added thread implementation for socket handle.
+    2016/03/11
+        - Use of metaclasses for messages and structs implementation.
+        - Fixes on HELLO Packet implementation
+        - initial skeleton to implement instrocpection
+        - MessageGeneric class
+        - better readme and hacking instructions
+        - better organization on problem description
+        - added messages, todo and instructions
+    2016/01
+        - Project restart
+
+[2013.0.0] - Initial - 2013-06-8
+********************************
+Added
+=====
+    2013
+        - initial implementation
+        - support for OF v0x01 messages building and parsing