Added to the schema:
1. eagleml-ref-shared-2-0.xsd: the element additionalInfo has been added to the ReferenceElementOverride.model group
2. eagleml-sec-shared-2-0.xsd: the element fiDetChar36 has been added to the FixedIncome.model group
Other changes:
1. eagleml-obj-2-0.xsd: the element objectType has been made optional in the Object.model group
Element annotations have been updated.