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*Release date: 2013-05-15*
* git tag: 'v0.2.1'
* added new script named blacktie-cummerbund to run cummeRbund
* added new class in calls.py CummerbundCall to use blacktie-cummerbund script to add cummeRbund plots to blacktie script
* checks for R and rpy2 installations
* if cummeRbund R library not found, it walks you through installing it
* ``src/blacktie/utils/calls.py``: - fixed _flag_out_dir() so that if the outdir has not been created yet it gracefully moves on
* ``examples/blacktie_config_example.yaml``: - added cummerbund_options
* ``requirements.txt``: - added rpy2
* updated docs