Version 0.6 release

• Use version 0.8.4.5 of MDIUtilities
• Allow to define a list of entity resolutions in the Settings
• Correctly handle references to Schemas which are relative to resolved Schemas
• Allow to store XML Catalogs in the user Settings
• Partial support for OASIS XML Catalogs: Take into account Schema references which are specified in Catalogs
• Improve the docx generation for a Schema content in the DocGeneration Plugin