doc updates
don't print ids for WF
minor tutorial updates
tutorial updates
restore ability to put dest within file! (broke tutorials for new users)
finish backward compatibility for FileTransferTask, add unit (integration) test
fix test
update docs to reflect refactor of transfertask
update firetask tutorial
update workflow tutorial
fix rare bug in which makedirs has a duplicate dir
slight mod to prev workaround
more randomness
document 2nd mode of filetransfertask
update changelog
mod to os.path.exists()
finish implementing and documenting BackgroundTask
update changelog
update to v0.7