doc: move HDRP box light under HDRP Features (#489)

* update readme
* remove what's new

Author: sindharta

README.md

@@ -14,7 +14,6 @@
   * [0.7.x-preview](com.unity.toonshader/Documentation~/whats-new-0.7.x.md)
   * [0.6.x-preview](com.unity.toonshader/Documentation~/whats-new-0.6.x.md)
   * [0.5.x-preview](com.unity.toonshader/Documentation~/whats-new-0.5.x.md)
-  * [0.4.x-preview](com.unity.toonshader/Documentation~/whats-new-0.4.x.md)
   * [0.3.x-preview](com.unity.toonshader/Documentation~/whats-new-0.3.x.md)
 * [Getting Started](com.unity.toonshader/Documentation~/GettingStarted.md)
 * [Material Converter](com.unity.toonshader/Documentation~/MaterialConverter.md)
@@ -34,7 +33,9 @@
   * [Outline Settings](com.unity.toonshader/Documentation~/Outline.md)
   * [Tessellation Settings(the Built-in Render Pipeline)](com.unity.toonshader/Documentation~/TessellationLegacy.md)
   * [Tessellation Settings(HDRP)](com.unity.toonshader/Documentation~/TessellationHDRP.md)
-* [Toon EV Adjustment(HDRP)](com.unity.toonshader/Documentation~/ToonEVAdjustment.md)  
+* Additional features for HDRP
+  * [Box Light](com.unity.toonshader/Documentation~/HDRPBoxLight.md)
+  * [Toon EV Adjustment](com.unity.toonshader/Documentation~/ToonEVAdjustment.md)
 * [Samples](com.unity.toonshader/Documentation~/sample-instlation.md)
 * [Feature Difference](com.unity.toonshader/Documentation~/FeatureModel_en.md)
 * [Known Issues](com.unity.toonshader/Documentation~/Known-issue.md)

com.unity.toonshader/Documentation~/whats-new-0.4.x.md renamed to com.unity.toonshader/Documentation~/HDRPBoxLight.md

@@ -8,7 +8,6 @@
   * [0.7.x-preview](whats-new-0.7.x.md)
   * [0.6.x-preview](whats-new-0.6.x.md)
   * [0.5.0-preview](whats-new-0.5.x.md)
-  * [0.4.0-preview](whats-new-0.4.x.md)
   * [0.3.0-preview](whats-new-0.3.x.md)
 * [Getting started](GettingStarted.md)
 * [Material Converter](MaterialConverter.md)
@@ -28,7 +27,9 @@
   * [Outline Settings](Outline.md)
   * [Tessellation Settings（the Built-in Render Pipeline）](TessellationLegacy.md)
   * [Tessellation Settings（HDRP）](TessellationHDRP.md)
-* [Toon EV Adjustment（HDRP）](ToonEVAdjustment.md)
+* Additional features for HDRP
+  * [Box Light](HDRPBoxLight.md)
+  * [Toon EV Adjustment](ToonEVAdjustment.md)
 * [Samples](sample-instlation.md)
 * [Feature Difference](FeatureModel_en.md)
 * [Known Issues](Known-issue.md)

com.unity.toonshader/Documentation~/TableOfContents.md

@@ -8,5 +8,4 @@ The list of pages is as follows:
 * [0.7.x-preview ](whats-new-0.7.x.md)
 * [0.6.x-preview ](whats-new-0.6.x.md)
 * [0.5.x-preview ](whats-new-0.5.x.md)
-* [0.4.x-preview ](whats-new-0.4.x.md)
 * [0.3.x-preview ](whats-new-0.3.x.md)