fixed BaseSingleValidator -> BaseSimpleValidator

BreakingChanges.txt

@@ -32,17 +32,17 @@ Spring.Core
 
 4. AbstractApplicationContext.CaseSensitive renamed to AbstractApplicationContext.IsCaseSensitive
 
-5. Spring.Validation: Base class BaseValidator changed to BaseSingleValidator for single validators as compared to group validators
+5. Spring.Validation: Base class BaseValidator changed to BaseSimpleValidator for single validators as compared to group validators
    which now commonly derive from BaseGroupValidator instead of ValidatorGroup
 
-6. IVariableSource implementations now must also implement CanResolveVariable(string variableName) and may throw exceptions in 
+6. IVariableSource implementations now must also implement CanResolveVariable(string variableName) and may throw exceptions in
    ResolveVariable() in case the variable cannot resolved by this particular variable source.
    In order to distinguish between an existing variable having a null value and a non-existing variable, variable sources
-   need to be changed to this new contract. 
+   need to be changed to this new contract.
 
 7. a) Signature of CollectionUtils.Contains(ICollection collection, object element) changed to CollectionUtils.Contains(IEnumerable collection, object element)
    b) returns 'null' in case of collection==null instead of throwing an exception
-   
+
 
 
 Spring.Aop