[tor-bugs] #1638 [Tor - Metrics]: Update to latest ggplot2 release once it contains our patches

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#1638: Update to latest ggplot2 release once it contains our patches
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 Reporter:  karsten        |       Owner:  Karsten
     Type:  task           |      Status:  new    
 Priority:  minor          |   Milestone:         
Component:  Tor - Metrics  |     Version:         
 Keywords:                 |      Parent:         
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 The two patches are (1) drawing a ribbon only for intervals with non-NA
 values (https://stat.ethz.ch/pipermail/r-help/2010-June/241559.html) and
 (2) positioning a legend at the top of a graph
 (https://stat.ethz.ch/pipermail/r-help/2010-June/241618.html).

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/1638>
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