Is there any chance to use rjson instead of RJSONIO in googleVis

[Andreas Tille]

Hi Markus,

I intend to package googleVis for Debian.  I realised that it depends
from RJSONIO which is using code with MIT-no-evil license - which is
actually evil since it is non-free. 

Could googleVis be adapted to use r-cran-rjson instead?  It is
mentioned here in the Debian bug tracking system:

  https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=712159#32

This would be really helpful

      Andreas.

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