updates

index.js

@@ -29,6 +29,7 @@ const { state } = require('./src/state/index.js');
 const convert = require('./src/convert/index.js');
 const MenuManager = require('./src/menu/index.js');
 const { predict, interpolation } = require('./src/predict/index.js');
+const { PIDController, CascadePIDController, createPidController, createCascadePidController } = require('./src/pid/index.js');
 const { loadCurve } = require('./datasets/assetData/curves/index.js'); //deprecated replace with load model data
 const { loadModel } = require('./datasets/assetData/modelData/index.js'); 
 
@@ -49,6 +50,10 @@ module.exports = {
     coolprop,
     convert,
     MenuManager,
+    PIDController,
+    CascadePIDController,
+    createPidController,
+    createCascadePidController,
     childRegistrationUtils,
     loadCurve, //deprecated replace with loadModel
     loadModel,