Add/update software

[espenhgn]

Fixes #315

Changes proposed in this pull request:

• Added R, Python packages

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• I've read and followed all steps in the Making a pull request
  section of the CONTRIBUTING docs.
• I've updated or added any relevant documentation and docstrings where appropriate in the codebase.
• If this PR fixes a bug, I've added a test that will fail without my fix.
• If this PR adds a new feature, I've added tests that sufficiently cover my new functionality.