Mention support for Python 3.1
Close workbook after test in teardown_module()
Added close() method to Workbook class
fixed setup/manifest.in so that pyc are not getting included in tests folder of distribution package
initial commit
skip tests if optional imports are not available
Closes #14: if asarray=True, the returned array is atleast_1d
Closes #13: 1d cols/rows with option "atleast_2d" and added methods is_cell(), is_row() etc
cleared values in test sheet
Fix and additional tests for None handling if atleast_2d=True