Preliminary to refactoring: relocate files into a more sensible package structure.
Updated version number in RnaChipIntegrator.py to reflect developmental status.
Add __init__.py to make into a package, and reference Spreadsheet module correctly in main program.
Move utility function from main program into new 'utils.py' module.
Moved functions from RnaChipIntegrator.py to 'distances' module.
Moved some tests from main test module to 'test_distances.py'.
test_distances.py: use fully qualified name for importing distances module.
Moved RNASeq data handling from main program into new RNASeq.py module.
Split out inline test data, test utility functions, and RNASeq tests.
Update RNASeqData test tearDown to remove leftover test file.
Move ChIP-seq handling classes from main program to ChIPSeq.py module.
Moved ChIP-seq handling tests into test_ChIPSeq.py.
RnaChipIntegrator.py: no longer need to import utils module.
Moved analysis functions from main program to new analyse.py module.
Split tests for analyses into new file test_analyse.py.
Removed redundant wrapper scripts.
Moved 'non-core utils' from main program to appropriate library modules.
Move last test out of test_RnaChipIntegrator.
Removed empty test file 'test_RnaChipIntegrator.py'.
analyse.py: import Spreadsheet module and use qualified name for utils.truncate_text call.