[SCM] efficient 2D data-plotting library annotated tag, upstream/2.2.1, created. upstream/2.2.1

[Picca Frédéric-Emma?==?UTF-8?Q?nuel]

The annotated tag, upstream/2.2.1 has been created
        at  3871e496b4347eae248a956009fe5ac338a031dc (tag)
   tagging  55f221c27711758c13fe0c300e15bc9ee99826f4 (commit)
  replaces  upstream/2.2.0
 tagged by  Picca Frédéric-Emmanuel
        on  Fri Nov 23 07:53:55 2012 +0100

- Shortlog ------------------------------------------------------------
Upstream version 2.2.1

Picca Frédéric-Emmanuel (1):
      Imported Upstream version 2.2.1

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efficient 2D data-plotting library