1.2.0

• updated payload gen tools to sync with harmonized SONG schemas which support well defined data categories and data types
• updated utils module to 1.1.5
• added default params, especially for second level objects, this can also serves as documentation
• added support for local mode which is greatly useful for testing
• added test that can be run on Travis without SONG/SCORE dependecies

Note: compatible argo-metadata-schema versions: 0.3.0