Add ID renaming superpowers to #[nested(...)]

This can now be used for most common use cases where you previously had
to do a manual `Params` implementation, like arrays of parameter objects
and duplicate parameter objects.

plugins/spectral_compressor/src/compressor_bank.rs

@@ -154,9 +154,9 @@ pub enum ThresholdMode {
 /// Contains the compressor parameters for both the upwards and downwards compressor banks.
 #[derive(Params)]
 pub struct CompressorBankParams {
-    #[nested = "upwards"]
+    #[nested(group = "upwards")]
     pub upwards: Arc<CompressorParams>,
-    #[nested = "downwards"]
+    #[nested(group = "downwards")]
     pub downwards: Arc<CompressorParams>,
 }
 

plugins/spectral_compressor/src/lib.rs

@@ -83,14 +83,14 @@ pub struct SpectralCompressorParams {
     // can use the generic UIs
     /// Global parameters. These could just live in this struct but I wanted a separate generic UI
     /// just for these.
-    #[nested = "global"]
+    #[nested(group = "global")]
     pub global: Arc<GlobalParams>,
 
     /// Parameters controlling the compressor thresholds and curves.
-    #[nested = "threshold"]
+    #[nested(group = "threshold")]
     pub threshold: Arc<compressor_bank::ThresholdParams>,
     /// Parameters for the upwards and downwards compressors.
-    #[nested = "compressors"]
+    #[nested(group = "compressors")]
     pub compressors: compressor_bank::CompressorBankParams,
 }