v0.9.5, 2012 06 21 -- Initial PyPI release.
v0.9.6, 2012 06 21 -- Including necessary java files.
v0.9.7, 2012 ?? ?? -- Undocumented.
v0.9.8, 2012 10 12 -- Include xmlns for instances.
v0.9.9, 2013 01 22 -- InstanceId always added, new cascade format support.
v0.9.9.1, 2013 01 24 -- bug fix on old xls cascade format support.
v0.9.10, 2013 02 15 -- bug fixes.
v0.9.11, 2013 03 20
    -- cascade as a required field support
    -- bind: relvant with white space ignored
v0.9.12, 2013 03 23
    -- better error reporting in missing headers, missing calculations
    -- support for rows column
v0.9.13, 2013 03 26 -- remove java elements in exception during odk validate.
v0.9.14, 2013 03 27 -- add support for sms fields
v0.9.15, 2013 04 26
    -- missing preload fields: username and email
    -- typo fixes
v0.9.16, 2013 04 26 -- changed sms field names
v0.9.17, 2013 04 26 -- experimental xform to json
v0.9.18, 2013 06 10 -- col header warnings + adding instance flattening tag
