add support for read() (without arguments) to comm_curl

Release notes for 0.2.3

Updated release notes, upgraded version numbers to 0.2.2

Updated release notes for 0.2.1

Updated documentation

status_interval parameter implemented

bugfix: test_reqmodules checked results incorrectly

Dependency to python2.4 changed to python (>=2.4)

First public release: Disco 0.1