The SpectrumEncoder in PeakabooConfiguration now passes float[] class…

… for encoder creation, as required by Kryo

LibPeakaboo/src/main/java/org/peakaboo/app/PeakabooConfiguration.java

@@ -9,7 +9,13 @@
 
 public class PeakabooConfiguration {
 
-	public static ScratchEncoder<Spectrum> spectrumEncoder = new CompoundEncoder<>(Serializers.fstUnsafe(ArraySpectrum.class), Compressors.lz4fast());
+	public static ScratchEncoder<Spectrum> spectrumEncoder = new CompoundEncoder<>(
+			Serializers.fstUnsafe(
+					ArraySpectrum.class,
+					float[].class
+				), 
+			Compressors.lz4fast()
+		);
 
 
 	public static final MemorySize memorySize = calcMemoryFootprint();