RecyclableLongList.BinarySearch implemented. Various performance improvements & fixes in RecyclableList.BinarySearch. Benchmarks & Tests extended.

Recyclable.Collections.Compatibility.List.Benchmarks/BinarySearch_ValueLowerThanFirstItem.cs

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+using Collections.Benchmarks.Core;
+
+namespace Recyclable.Collections.Compatibility.List.Benchmarks
+{
+	public class BinarySearchValueLowerThanFirstItemBenchmarks : RecyclableCollectionsCompatibilityListBenchmarks
+	{
+		public override string MethodNameSuffix => "_BinarySearch_ValueLowerThanFirstItem";
+
+		public void Array_BinarySearch_ValueLowerThanFirstItem()
+		{
+			var list = TestObjects;
+			DoNothing.With(Array.BinarySearch(list, -1));
+		}
+
+		public void List_BinarySearch_ValueLowerThanFirstItem()
+		{
+			var list = TestObjectsAsList;
+			DoNothing.With(list.BinarySearch(-1));
+		}
+
+		public void PooledList_BinarySearch_ValueLowerThanFirstItem()
+		{
+			var list = TestObjectsAsPooledList;
+			DoNothing.With(list.BinarySearch(-1));
+		}
+
+		public void RecyclableList_BinarySearch_ValueLowerThanFirstItem()
+		{
+			var list = TestObjectsAsRecyclableList;
+			DoNothing.With(list.BinarySearch(-1));
+		}
+
+		public void RecyclableLongList_BinarySearch_ValueLowerThanFirstItem()
+		{
+			var list = TestObjectsAsRecyclableLongList;
+			DoNothing.With(list.BinarySearch(-1));
+		}
+	}
+}