serial 3.1.1
====================

* update maintainers address
* bug fix with listPorts() on Windows systems never attached to a serial port.
* fix S3 object class issues 

serial 3.0
====================

* bug fix with connection names on MacOS
* introduce print()- and summary()-function
* if read() produces a zero length object it now returns empty string '' in ASCII mode and NA in binary mode

serial 2.1
====================

* bug fix with connection names on Linux


serial 2.0
====================

* enable binary mode
* introduce flush()-function
* introduce nBytes()-function

serial 1.0
====================

* initial release
* ASCII-based communication