Get all the tasks with their status at the time of the request.
See also
Other task functions:
opal.task(),
opal.task_cancel(),
opal.task_wait()
Examples
if (FALSE) { # \dontrun{
o <- opal.login('administrator','password', url='https://opal-demo.obiba.org')
opal.tasks(o)
opal.logout(o)
} # }