The following changes have been made to data validation:

V9	V11
GcSpread.Sheets.DefaultDataValidator class	GC.Spread.Sheets.DataValidation.DefaultDataValidator
GcSpread.Sheets.DefaultDataValidator.createNumberValidator	GC.Spread.Sheets.DataValidation.createNumberValidator
GcSpread.Sheets.DefaultDataValidator.createDateValidator	GC.Spread.Sheets.DataValidation.createDateValidator
GcSpread.Sheets.DefaultDataValidator.createTextLengthValidator	GC.Spread.Sheets.DataValidation.createTextLengthValidator
GcSpread.Sheets.DefaultDataValidator.createFormulaValidator	GC.Spread.Sheets.DataValidation.createFormulaValidator
GcSpread.Sheets.DefaultDataValidator.createFormulaListValidator	GC.Spread.Sheets.DataValidation.createFormulaListValidator
GcSpread.Sheets.DefaultDataValidator.createListValidator	GC.Spread.Sheets.DataValidation.createListValidator
DefaultDataValidator.errorStyle	Field changed to method.
DefaultDataValidator.ignoreBlank	Field changed to method.
DefaultDataValidator.inCellDropdown	Field changed to method.
DefaultDataValidator.showInputMessage	Field changed to method.
DefaultDataValidator.showErrorMessage	Field changed to method.
DefaultDataValidator.inputTitle	Field changed to method.
DefaultDataValidator.errorTitle	Field changed to method.
DefaultDataValidator.inputMessage	Field changed to method.
DefaultDataValidator.errorMessage	Field changed to method.
DefaultDataValidator.comparisonOperator	Field changed to method.
DefaultDataValidator.condition	Field changed to method.
DefaultDataValidator.type	Field changed to method.

The enumerations for data validation have been moved to the GC.Spread.Sheets.DataValidation namespace.