Add retro-proof constructors for DataSet and LabelSet

(simply consume surplus name argument rather than forwarding up the 
chain)

release-packaging/Classes/FluidDataSet.sc

@@ -1,6 +1,7 @@
 
 FluidDataSet : FluidDataObject
 {
+    *new{|server| ^super.new(server) }
 
     addPointMsg{|label,buffer|
         buffer = this.prEncodeBuffer(buffer);

release-packaging/Classes/FluidLabelSet.sc

@@ -1,5 +1,7 @@
 FluidLabelSet : FluidDataObject {
 
+    *new{|server| ^super.new(server) }
+
     addLabelMsg{|identifier,label|
         ^this.prMakeMsg(\addLabel,id,identifier.asSymbol,label.asSymbol);
     }