streamy 0.2.0

• The package now has a hex sticker (#6—thanks Hadley)!

• stream() will now remove triple backticks from the generator's reponse
  when streaming into a .R file (#7, simonpcouch/gander#5).

• Addresses an issue where, in Positron, stream() might overwrite lines
  following a selection.

• stream() will now display a progress bar when there is otherwise no
  visual indication to the user that the generator is running (#3).