fix(unity): increase support for unity 2020

Author: Whinarn

Editor/LODGeneratorHelperEditor.cs

@@ -610,12 +610,12 @@ where go.transform.IsChildOf(ourTransform)
 
             var notChildGameObjects = from go in gameObjects
                                       where !go.transform.IsChildOf(ourTransform)
-#if UNITY_2018_3 || UNITY_2018_4 || UNITY_2019
+#if UNITY_2018_3 || UNITY_2018_4 || UNITY_2019 || UNITY_2020
                                          && !PrefabUtility.IsPartOfAnyPrefab(go)
 #endif
                                       select go;
 
-#if UNITY_2018_3 || UNITY_2018_4 || UNITY_2019
+#if UNITY_2018_3 || UNITY_2018_4 || UNITY_2019 || UNITY_2020
             var prefabGameObjects = from go in gameObjects
                                     where !go.transform.IsChildOf(ourTransform) &&
                                         PrefabUtility.IsPartOfAnyPrefab(go)

Runtime/MeshCombiner.cs

@@ -24,7 +24,7 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 */
 #endregion
 
-#if UNITY_2017_3 || UNITY_2017_4 || UNITY_2018 || UNITY_2019
+#if UNITY_2017_3 || UNITY_2017_4 || UNITY_2018 || UNITY_2019 || UNITY_2020
 #define UNITY_MESH_INDEXFORMAT_SUPPORT
 #endif
 

Runtime/MeshSimplifier.cs

@@ -37,11 +37,11 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 //https://github.com/sp4cerat/Fast-Quadric-Mesh-Simplification
 #endregion
 
-#if UNITY_2018_2 || UNITY_2018_3 || UNITY_2018_4 || UNITY_2019
+#if UNITY_2018_2 || UNITY_2018_3 || UNITY_2018_4 || UNITY_2019 || UNITY_2020
 #define UNITY_8UV_SUPPORT
 #endif
 
-#if UNITY_2017_3 || UNITY_2017_4 || UNITY_2018 || UNITY_2019
+#if UNITY_2017_3 || UNITY_2017_4 || UNITY_2018 || UNITY_2019 || UNITY_2020
 #define UNITY_MESH_INDEXFORMAT_SUPPORT
 #endif
 

Runtime/Utility/MeshUtils.cs

@@ -24,11 +24,11 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 */
 #endregion
 
-#if UNITY_2018_2 || UNITY_2018_3 || UNITY_2018_4 || UNITY_2019
+#if UNITY_2018_2 || UNITY_2018_3 || UNITY_2018_4 || UNITY_2019 || UNITY_2020
 #define UNITY_8UV_SUPPORT
 #endif
 
-#if UNITY_2017_3 || UNITY_2017_4 || UNITY_2018 || UNITY_2019
+#if UNITY_2017_3 || UNITY_2017_4 || UNITY_2018 || UNITY_2019 || UNITY_2020
 #define UNITY_MESH_INDEXFORMAT_SUPPORT
 #endif
 

Tests/Editor/MeshUtilsTest.cs

@@ -24,7 +24,7 @@ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 */
 #endregion
 
-#if UNITY_2017_3 || UNITY_2017_4 || UNITY_2018 || UNITY_2019
+#if UNITY_2017_3 || UNITY_2017_4 || UNITY_2018 || UNITY_2019 || UNITY_2020
 #define UNITY_MESH_INDEXFORMAT_SUPPORT
 #endif