v2.0

• Introduced throwing different exceptions for the different validations. Now we throw ArgumentException, ArgumentNullException and ArgumentOutOfRangeException according to the best practices.
• Introduced IsEmpty(), IsNotEmpty(), IsNullOrWhiteSpace(), IsNotNullOrWhiteSpace() validations for strings.

v1.3.0

• Extensibility improvements through exposing some existing APIs. Thanks for the request of @alfidanov for the feature request!
• Introduced IsEqual IsNotEqual for string with comparison types.

v1.2.0.1

• Converted from ClassLibrary to PortableLibrary. Now it supports .NET Framework 4 and higher; Silverlight 4 and higher; Windows Phone 7 and higher; .NET for Windows Store apps; Xbox 360.
• Refactored the validation messages. Now every value is surrounded by <> for better readability.
• Introduced IsInstanceOfType() & IsNotInstanceOfType methods.
• Introduced IsNull() & IsNotNull() for Nullable types.
• IntelliSense improvements. The members of IArgument and IValidatableArgument are now hidden from the editor.
• Added special float predicates - Infinity, NegativeInfinity, PositiveInfinity, NaN.
• Added special double predicates - Infinity, NegativeInfinity, PositiveInfinity, NaN.
• Better support for byte and short (no need to cast).

v1.1 of the library

.NET 4.0 compatability
Fixed a bug with IEnumerable rules.
Moved from IValidationRules to IValidationPredicate - there was ambiguity when rule is valid, but the argument is invalid
Throw method is now split in two parts - exception creation and throwing. Now a custom context specific Throw methods could be developed. For Example ThrowConfigurationExcaption().

v1.0 of the library

Initial version of the validation library. You can find it @ https://www.nuget.org/packages/Bytes2you.Validation/