v5.0.0

• added ModelBuilder to configure the model, allowing the customization of keys and ignoring properties during code generation
• added FieldTypeBuilderExtensions for configuring decimal types #66 (requested by @mrt181)
• added IFromItemTypeConfiguration to apply model-related configurations using the provided ModelBuilder
• added IConventionConfiguration to apply model-related conventions. DecimalTypeConvention represents a decimal type convention for configuring precision and scale.
• see also breakingchanges.md