README.md - add emojis

Engine/README.md

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 Currently fastest 🔥 ECS implementation in C# / .NET - using **Ecs.CSharp.Benchmark** as reference.  
 See benchmark results - Mac Mini M2 - at the bottom of this page.  
 
-![new](docs/images/new.svg) released **v2.0.0**  
+Released **v2.0.0**  
 Added [Systems](#systems), [Native AOT](https://github.com/friflo/Friflo.Json.Fliox/wiki/Examples-~-General#native-aot) support,
 performance improvements and bug fixes. See [Release ⋅ engine-v2.0.0](https://github.com/friflo/Friflo.Json.Fliox/releases/tag/engine-v2.0.0).
 
-![new](docs/images/new.svg) released **v3.0.0-preview.2**  
+![new](docs/images/new.svg) released **v3.0.0-preview.5**  
 Added new features supported by a set of specialized [Component Types](https://github.com/friflo/Friflo.Json.Fliox/wiki/Examples-~-Component-Types) for  
 **Entity Relationships** 1:1 and 1:many, **Relations** and full-text **Search** executing in O(1).
 
 ![new](docs/images/new.svg) Created a new GitHub repository [ECS.CSharp.Benchmark - Common use-cases](https://github.com/friflo/ECS.CSharp.Benchmark-common-use-cases)  
 comparing the performance of multiple ECS projects with **simple** benchmarks.
 
 *Feature highlights*
-- Simple API - no boilerplate.
+- Simple API - no boilerplate, rock-solid 🗿 & bulletproof 🔫.
 - High-performance 🔥 and compact ECS with low memory footprint. 100.000.000 entities with 16 GB RAM.
-- Zero allocations for entire API after buffers grown large enough. No struct boxing.
-- Fully reactive - *optional*. Subscribe change events of all or specific entities.
-- JSON Serialization - *optional*.
-- SIMD Support - *optional*. Multi thread capable and remainder loop free.
+- Zero ⭕ allocations for entire API after buffers grown large enough. No struct boxing.
+- Fully reactive ⚡ *optional*. Subscribe change events of all or specific entities.
+- JSON Serialization 📀 *optional*.
+- SIMD Support 🧮 *optional*. Multi thread capable and remainder loop free.
 - Supports .NET Standard 2.1 .NET 5 .NET 6 .NET 7 .NET 8    
-  WASM / WebAssembly, Unity (Mono, AOT/IL2CPP, WebGL), Godot, MonoGame, ... and ![new](docs/images/new.svg) Native AOT
-- **100% secure C#**. No *unsafe code*. No *native dll bindings*. No *access violation* bugs. 
+  WASM / WebAssembly, Unity (Mono, AOT/IL2CPP, WebGL), Godot, MonoGame, ... and Native AOT
+- **100% secure C#** 🔒. No *unsafe code*. No *native dll bindings*. No *access violation* bugs. 
   See [Wiki ⋅ Library](https://github.com/friflo/Friflo.Json.Fliox/wiki/Library#assembly-dll).  
   *Access violation* bugs caused by *unsafe code* on customer installs provide often no stacktrace when crashing.