Changes in version 1.84 (2010-04-28)                  

    o   Bugfix sfExport: if exporting a NULL value, no error is raised.

                  Changes in version 1.83 (2010-03-04)                  

    o   sfIsRunning: new function giving a logical is sfInit() was called or
	not. Needed, as all other snowfall functions implicitely call sfInit()
	if it was not called.

                        Changes in version 1.82                         

    o   Internal refactorings.

                        Changes in version 1.81                         

    o   Change in sfInit() MPI startup so sfCluster can run with
	snow > 0.3 now.

    o   sfExport now also works in sequential mode (writing to
	global environment). This prevented sequential execution
	in some cases.

                        Changes in version 1.80                         

    o   snowfall passes packages checks of R 2.10.1 without warning
	or error. Internal state is now only saved in the namespace
	itself (thanks to Uwe Ligges for the tipp).

    o   sfExport can now also export objects in a specific namespace
	(argument 'namespace')

    o   sfExport: behavior in error case manageable (stopOnError)

    o   sfExport: smaller bugfixes.

    o   sfRemoveAll can now also remove hidden names (argument 'hidden')

    o   sfRemoveAll is more robust now (some minor bugfixes, more checks)

    o   sfRemoveAll bugfix for multiple removals (thanks to Greggory Jefferis)

    o   Bugfix on exception list on sfExportAll

    o   Refactorings in sfTest()

    o   snowfall now has a NEWS doc ;)

    o   No warning on Mac OS because of default Mac-R command line arg 'gui'
	(thanks to Michael Siegel).