Bumped version and updated some codacity recommendations

Author: grofit

appveyor.yml

@@ -1,4 +1,4 @@
-version: 5.1.{build}
+version: 6.0.{build}
 branches:
   only:
   - master

src/EcsRx.Plugins.Computeds/ComputedFromGroup.cs

@@ -18,7 +18,7 @@ public abstract class ComputedFromGroup<T> : IComputed<T>, IDisposable
 
         public IObservableGroup InternalObservableGroup { get; }
 
-        public ComputedFromGroup(IObservableGroup internalObservableGroup)
+        protected ComputedFromGroup(IObservableGroup internalObservableGroup)
         {
             InternalObservableGroup = internalObservableGroup;
             Subscriptions = new List<IDisposable>();

src/EcsRx/Extensions/IEntityCollectionExtensions.cs

@@ -2,7 +2,6 @@
 using System.Collections.Generic;
 using System.Linq;
 using EcsRx.Blueprints;
-using EcsRx.Collections;
 using EcsRx.Collections.Entity;
 using EcsRx.Components;
 using EcsRx.Entities;
@@ -62,11 +61,7 @@ public static IEnumerable<IEntity> Query(this IEntityCollection entityCollection
         { return query.Execute(entityCollection); }
 
         public static IEntity CreateEntity(this IEntityCollection entityCollection, params IBlueprint[] blueprints)
-        {
-            var entity = entityCollection.CreateEntity();
-            entity.ApplyBlueprints(blueprints);
-            return entity;
-        }
+        { return CreateEntity(entityCollection, (IEnumerable<IBlueprint>)blueprints); }
 
         public static IEntity CreateEntity(this IEntityCollection entityCollection, IEnumerable<IBlueprint> blueprints)
         {