Refactor event handling and improve argument validation across indicators

- Updated event handler signatures to use TValueEventArgs for consistency in Mama, Mgdi, Pwma, Rma, Sma, Ssf, Super, T3, Tema, Trima, Usf, Vidya, Wma, and Atr classes.
- Enhanced argument validation by specifying parameter names in exceptions for clarity.
- Adjusted tests to align with new event handler signatures.
- Improved code readability and maintainability by using structured records and lambda expressions.

lib/trends/pwma/Pwma.cs

@@ -33,7 +33,9 @@ public sealed class Pwma : AbstractBase
     private readonly double _divisor;
     private readonly RingBuffer _buffer;
     private readonly RingBuffer _p_buffer;
+    private readonly TValuePublishedHandler _handler;
 
+    [StructLayout(LayoutKind.Auto)]
     private record struct State(double Sum, double WSum, double PSum, double LastInput, double LastValidValue, int TickCount);
     private State _state;
     private State _p_state;
@@ -52,13 +54,16 @@ public sealed class Pwma : AbstractBase
         _p_buffer = new RingBuffer(period);
         Name = $"Pwma({period})";
         WarmupPeriod = period;
+        _handler = Handle;
     }
 
     public Pwma(ITValuePublisher source, int period) : this(period)
     {
-        source.Pub += (item) => Update(item);
+        source.Pub += _handler;
     }
 
+    private void Handle(object? sender, TValueEventArgs e) => Update(e.Value, e.IsNew);
+
     [MethodImpl(MethodImplOptions.AggressiveInlining)]
     private double GetValidValue(double input)
     {
@@ -152,7 +157,7 @@ public sealed class Pwma : AbstractBase
         double count = _buffer.Count;
         double currentDivisor = _buffer.IsFull ? _divisor : count * (count + 1.0) * (2.0 * count + 1.0) / 6.0;
         Last = new TValue(input.Time, _state.PSum / currentDivisor);
-        PubEvent(Last);
+        PubEvent(Last, isNew);
         return Last;
     }
 
@@ -231,7 +236,7 @@ public sealed class Pwma : AbstractBase
     public static void Calculate(ReadOnlySpan<double> source, Span<double> output, int period)
     {
         if (source.Length != output.Length)
-            throw new ArgumentException("Source and output must have the same length");
+            throw new ArgumentException("Source and output must have the same length", nameof(output));
         if (period <= 0)
             throw new ArgumentException("Period must be greater than 0", nameof(period));