Added handler and configurability of wavefrom view

com.minres.scviewer.database.test/inputs/simple_system.vcd

@@ -1622,7 +1622,7 @@ b1110100011010100101001010 aabdd
 0aabdv
 0aabdw
 0aabdx
-r1.0 bbbbb
+r0.0 bbbbb
 $end
 
 #10000
@@ -1640,6 +1640,28 @@ $end
 0aabcq
 0aabcy
 0aabde
+r1.0 bbbbb
+
+#20000
+r2.0 bbbbb
+
+#30000
+r2.5 bbbbb
+
+#40000
+r1.5 bbbbb
+
+#50000
+r-1.0 bbbbb
+
+#60000
+r-2.5 bbbbb
+
+#70000
+r-1.0 bbbbb
+
+#80000
+r0.0 bbbbb
 
 #1287121272
 b1000000000100000000000000000100 aabcr