Cleanup.

SharpBag/Collections/BinaryHeap.cs

@@ -108,6 +108,11 @@ public void Invalidate(T item)
 			}
 		}
 
+		/// <summary>
+		/// Swap the values at the specified indices.
+		/// </summary>
+		/// <param name="i">The first index.</param>
+		/// <param name="j">The second index.</param>
 		protected void Swap(int i, int j)
 		{
 			T temp = this.InternalArray[i];

SharpBag/Math/BigDecimal.cs

@@ -574,6 +574,12 @@ public static BigDecimal Exp(BigDecimal value)
 			return BigDecimal.Round(result, value.Precision + 1);
 		}
 
+		/// <summary>
+		/// Rounds the BigDecimal.
+		/// </summary>
+		/// <param name="value">The value.</param>
+		/// <param name="digits">The amount of digits to keep.</param>
+		/// <returns>The rounded value.</returns>
 		public static BigDecimal Round(BigDecimal value, int digits = 0)
 		{
 			Contract.Requires(digits >= 0);