Update README.md and bump version to 4.0.0 (#21)

README.md

@@ -1,40 +1,26 @@
 # Dodo.Primitives
 
-[![Latest release](https://img.shields.io/badge/nuget-3.0.0-blue?&kill_cache=1)](https://www.nuget.org/packages/Dodo.Primitives/3.0.0)
+[![Latest release](https://img.shields.io/badge/nuget-4.0.0-blue?&kill_cache=1)](https://www.nuget.org/packages/Dodo.Primitives/4.0.0)
 [![codecov](https://codecov.io/gh/dodobrands/primitives/graph/badge.svg?token=7ILQPREIVA)](https://codecov.io/gh/dodobrands/primitives)
 
 Library provides .NET primitive types:
 
 - [Uuid](./src/Dodo.Primitives/Uuid.cs)
 
-and utils to work with types:
-
-- [Hex](./src/Dodo.Primitives/Hex.cs)
-
 ## Project goal
 
-The main goal is Uuid implementation according to the [RFC4122](https://tools.ietf.org/html/rfc4122).
-
-.NET provides [System.Guid](https://docs.microsoft.com/en-us/dotnet/api/system.guid) struct which is special case of the RFC4122 implementation. System.Guid has [little-endian layout](https://github.com/dotnet/runtime/blob/v8.0.0/src/libraries/System.Private.CoreLib/src/System/Guid.cs#L33-L35) for the first 8 bytes (int32, int16, int16).
+The main goal is Uuid implementation according to the [RFC9562](https://www.rfc-editor.org/rfc/rfc9562.html).
 
-Our goal is to provide Uuid fully compliant with RFC4122 (big-endian layout) and preserve System.Guid-like behaviour. Also project contains generators to create different Uuid variants. Currently supported variants:
+.NET provides [System.Guid](https://docs.microsoft.com/en-us/dotnet/api/system.guid) struct which is special case of the RFC9562 implementation. System.Guid has [little-endian layout](https://github.com/dotnet/runtime/blob/v9.0.0/src/libraries/System.Private.CoreLib/src/System/Guid.cs#L44-L46) for the first 8 bytes (int32, int16, int16).
 
-- Time-based (like [Uuid v1](https://tools.ietf.org/html/rfc4122#section-4.1.3)).
+Our goal is to provide Uuid fully compliant with RFC9562 (big-endian layout) and preserve System.Guid-like behaviour. 
+Also project contains generators to create Uuid version 7.
 
   ```csharp
-    var uuid = Uuid.NewTimeBased();
+    var uuid = Uuid.CreateVersion7();
   ```
 
-- Time-based, optimized for MySQL.
-
-  ```csharp
-    var uuid = Uuid.NewMySqlOptimized();
-  ```
-
-  Equals `UUID_TO_BIN(UUID(), 1)` from [MySQL 8.0](https://dev.mysql.com/doc/refman/8.0/en/miscellaneous-functions.html#function_uuid-to-bin)
-
 ## Project documentation
 
 - [Prerequisites, build and development](https://github.com/dodobrands/primitives/wiki/Prerequisites,-build-and-development)
 - [Benchmarks](https://github.com/dodobrands/primitives/wiki/Benchmarks)
-

src/Directory.Build.props

@@ -1,6 +1,6 @@
 <Project>
     <PropertyGroup>
         <VersionPrefix>4.0.0</VersionPrefix>
-        <VersionSuffix>beta1</VersionSuffix>
+        <VersionSuffix></VersionSuffix>
     </PropertyGroup>
 </Project>