Added release info and updated project description to reference the n…

…ew doc.

Cryptography.Fernet/Cryptography.Fernet.csproj

@@ -8,7 +8,10 @@
     <RepositoryUrl>https://github.com/daverayment/Cryptography.Fernet</RepositoryUrl>
     <PackageLicenseExpression>MIT</PackageLicenseExpression>
     <Authors>daverayment</Authors>
-    <Description>A .NET implementation of the full Fernet symmetric encryption standard.</Description>
+    <Description>
+		A .NET implementation of the full Fernet symmetric encryption standard.
+		See https://github.com/daverayment/Cryptography.Fernet/blob/master/RELEASE.md for further information about this release.
+	</Description>
     <Copyright>Copyright (c) 2022 David Rayment</Copyright>
     <PackageReadmeFile>README.md</PackageReadmeFile>
     <PackageIcon>Images\001-key-lock-128x128.png</PackageIcon>

Cryptography.Fernet/RELEASE.md

@@ -0,0 +1,21 @@
+# Version 1.1.0
+
+## New functionality
+- A `saveTimestamp` parameter was added to `Encrypt`. This defaults to `true`, which provides the same functionality as prior releases. Setting to `false` means the token will be generated with a zeroed-out creation timestamp. This is a solution for certain scenarios where unencrypted timestamps such as Fernet's are regarded as sensitive information.
+- `Decrypt` now features automatic validation for 'clock drift' situations. This is where the decrypting system's internal clock differs from the system which generated the token. An exception is thrown if a token's creation timestamp is too far in the future. The maximum discrepancy is stored within the `MaxClockDrift` TimeSpan in the main project's `Fernet.cs` file.
+
+## Testing
+A significant number of new tests were added to the unit test project, bringing the total up to more than 30:
+- Tests added to exercise the entire specification, validation and generation documentation from the Fernet project repository.
+- Tests added for the `Utility.Base64UrlEncoder` class.
+
+Most tests now include at least summary documentation.
+
+## API Changes
+- `Base64UrlEncoder.DecodeBytes` now throws a `System.FormatException` instead of a `System.ArgumentException` if the string passed in is invalid.
+
+# Version 1.0.1
+Minor documentation edit to fix a link which was rendered incorrectly on NuGet.
+
+# Version 1.0.0
+First deployment to NuGet. Encryption, Decryption, base64url utilities etc. all tested working. Unit test project included. Compatibility tested with Python implementation and token examples given in the specification repository.