add better way to get norms

src/javastraw/StrawGlobals.java

@@ -25,7 +25,7 @@
 package javastraw;
 
 public class StrawGlobals {
-    public static final String versionNum = "2.07.00";
+    public static final String versionNum = "2.07.01";
     // min hic file version supported
     public static final int minVersion = 6;
     public static final int bufferSize = 2097152;

src/javastraw/reader/norm/NormalizationHandler.java

@@ -0,0 +1,23 @@
+package javastraw.reader.norm;
+
+import javastraw.reader.Dataset;
+import javastraw.reader.type.NormalizationType;
+
+import java.util.Arrays;
+import java.util.Map;
+
+public class NormalizationHandler {
+    public static NormalizationType getFirstValidNormInThisOrder(Dataset ds, String[] norms) {
+        Map<String, NormalizationType> normsForDataset = ds.getNormalizationTypesMap();
+
+        for (String key : norms) {
+            if (normsForDataset.containsKey(key)) {
+                return normsForDataset.get(key);
+            }
+        }
+
+        System.err.println("None of these normalizations were found: " + Arrays.toString(norms));
+        System.exit(11);
+        return null;
+    }
+}