share/IlluminaData.py 1.2.0: new class IEMSampleSheet (read Experimental Manager-style sample sheets).
share/IlluminaData.py 1.2.1: update 'get_casava_sample_sheet' to use IEMSampleSheet class.
share/bcf_utils.py 1.4.6: new function 'split_into_lines' (splits text into lines without breaking words).