Version 1.0     13 Feb 2002
    First public release.
    Split from the pybsl application (see mspgcc.sourceforge.net)
    
    New Features:
        - Added Jython support
    
Version 1.1     14 Feb 2002
    Bugfixes:
        - Win32, when not specifying a timeout
        - Typos in the Docs
        
    New Features:
        - added serialutil which provides a base class for the Serial
          objects.
        
        - readline, readlines, writelines and flush are now supported
          see README.txt for deatils.

Version 1.11    14 Feb 2002
    Same as 1.1 but added missing files.

Version 1.12    18 Feb 2002
    Removed unneded constants to fix RH7.x problems.

Version 1.13    09 Apr 2002
    Added alternate way for enabling rtscts (CNEW_RTSCTS is tried too)
    If port opening fails, a SerialException is raised on all platforms

Version 1.14    29 May 2002
    Added examples to archive
    Added non-blocking mode for timeout=0 (tnx Mat Martineau)

    Bugfixes:
        - win32 does now return the remaining characters on timeout

Version 1.15    04 Jun 2002
    Bugfixes (win32):
        - removed debug messages
        - compatibility to win9x improved

Version 1.16    02 Jul 2002
    Added implementation of RI and corrected RTS/CTS on Win32

Version 1.17    03 Jul 2002
    Silly mix of two versions in win32 code corrected

Version 1.18    06 Dec 2002
    Bugfixes (general):
        - remove the mapping of flush to the destructive flushOutput as
          this is not the expected behaviour.
        - readline: EOL character for lines can be chosen idea by 
          John Florian.
    Bugfixes (posix):
        - cygwin port numbering fixed
        - test each and every constant for it's existence in termios module,
          use default if not existent (fix for Bug item #640214)
        - wrong exception on nonexitstent ports with /dev file. bug report
          by Louis Cordier
    Bugfixes (win32):
        - RTS/CTS handling as sugested in Bug #635072
        - bugfix of timeouts brought up by Markus Hoffrogge

Version 1.19    19 Mar 2003
    Bugfixes (posix):
        - removed dgux entry which actualy had a wrong comment and is
          probably not in use anywhere.
    Bugfixes (win32):
        - added int() conversion, [Bug 702120]
        - remove code to set control lines in close methond of win32
          version. [Bug 669625]

Version 1.20    28 Aug 2003
    Added serial.device() for all platforms
    Bugfixes (win32):
        - don't recreate opverlaped structures and events on each
          read/write.
        - don't set unneded event masks.
        - dont use DOS device names for ports > 9.
        - remove send timeout (its not used in the linux impl. anyway).


Version 1.21    30 sep 2003
    Bugfixes (win32):
        - name for COM10 was not built correctly, found by Norm Davis.
    Bugfixes (examples):
        - small change in miniterm.py that should mage it run on cygwin,
          [Bug 809904] submitted by Rolf Campbell.

Version 2.0b1    1 Oct 2003
    Transition to the 2.0 series:
    - New implementation only supports Python 2.2+, backwards compatibility
      should be maintained almost everywhere.
      The OS handles (like the hComPort or fd attribute) were prefixed with an
      underscore. The different names stay, as anyone that uses one of these
      has to write platform specific code anyway.
    - Common base class serialutil.SerialBase for all implementations.
    - PARITY_NONE, PARITY_EVEN, PARITY_ODD constants changed and all these
      constants moved to serialutil.py (still available as serial.PARITY_NONE
      etc. and they should be used that way)
    - Added serial.PARITY_NAMES (implemented in serialutil.PARITY_NAMES).
      This dictionary can be used to convert parity constants to meaningful
      strings.
    - Each Serial class and instance has a list of supported values:
        BAUDRATES, BYTESIZES, PARITIES, STOPBITS
      (i.e. serial.Serial.BAUDRATES or s = serial.Serial; s.BAUDRATES)
      these values can be used to fill in value sin GUI dialogs etc.
    - Creating a Serial() object without port spec returns an unconfigured,
      closed port. Useful if a GUI dialog should take a port and configure
      it.
    - New methods for serial.Serial instances: open(), isOpen()
    - A port can be opened and closed as many times as desired.
    - Instances of serial.Serial have baudrate, bytesize, timeout etc.
      attributes implemented as properties, all can be set while the port is
      opened. It will then be reconfigured.
    - Improved __doc__'s.
    - New test_advanced.py for the property setting/getting testing.
    - Small bugfix on posix with get* methods (return value should be true a
      boolean).
    - added a __repr__ that returns a meaningful string will all the serial
      setting, easy for debugging.
    - The serialposix module does not throw an exception on unsupported
      platforms, the message is still printed. The idea that it may still
      work even if the platform itself s not known, it simply tries to do
      the posix stuff anyway (It's likely that opening ports by number
      fails, but by name it should work).

Version 2.0b2    4 Oct 2003
    - Added serial port configuration dialog for wxPython to the examples.
    - Added terminal application for wxPython with wxGlade design file
      to the examples.
    - Jython support is currenty broken as Jython does not have a Python 2.2
      compatible release out yet

Version 2.0      6 Nov 2003
    - Fixes setup.py for older distutils

Version 2.1     28 Jul 2004
    Bugfixes:
        - Fix XON/XOFF values [Bug 975250]
    Bugfixes (posix):
        - fd == 0 fix from Vsevolod Lobko
        - netbsd fixes from Erik Lindgren
        - Dynamicaly lookup baudrates and some cleanups
    Bugfixes (examples):
        - CRLF handling of miniterm.py should be more consistent on Win32
          and others. Added LF only command line option
        - Mutithreading fixes to wxTerminal.py (helps with wxGTK)
        - Small change for wxPython 2.5 in wxSerialConfigDialog.py [Bug 994856]
        
    New Features:
        - Implement write timeouts ('writeTimeout' parameter)


Version 2.2     31 Jul 2005
    Bugfixes:
        - [Bug 1014227]: property <del> broken
        - [Bug 1105687]: serial_tcp_example.py: --localport option
        - [Bug 1106313]: device (port) strings cannot be unicode
    Bugfixes (posix):
        - [Patch 1043436] Fix for [Bug 1043420] (OSError: EAGAIN)
        - [Patch 1102700] fileno() added
        - ensure disbaled PARMRK
    Bugfixes (win32):
        - [Patch 983106]: keep RTS/CTS state on port setting changes

    New Features:
        - dsrdtr setting to enable/disable DSR/DTR flow control independently
          from the rtscts setting. (Currenly Win32 only, ignored on other
          platforms)

