Release v0.4.0 - Creation of ISA content and enhancements

This release of isatools firms up ISA content creation with example code and added documentation; implemented a range of enhancements and bug fixes, including boosting test coverage from 55% to 73%. New features and enhancements include:

• A more complete user guide to creating ISA content using objects
• Validator reports generated as JSON
• Batch validation scripts
• Integration of the mzml2isa tool into the ISA API

For more information on the known issues with this release, please check the documentation at http://isatools.readthedocs.org