feat(AppCtx): added unwrapCtx method to get bare ctx object

affects: tao

this allows better interop between the AppCtx and what Kernel expects when adding/removing handlers

packages/tao/src/AppCtx.js

@@ -103,4 +103,8 @@ export default class AppCtx extends AppCtxRoot {
   get data() {
     return this.datum;
   }
+
+  unwrapCtx() {
+    return { t: this.t, a: this.a, o: this.o };
+  }
 }

packages/tao/src/AppCtx.spec.js

@@ -36,6 +36,21 @@ describe('AppCtx exports a class extending AppCtxRoot', () => {
   });
 });
 
+describe('AppCtx can be unwrapped to a bare TAO App Context', () => {
+  it('should have an unwrapCtx function returning an object of the form { t, a, o } that can be used with other APIs', () => {
+    // Assemble
+    const uut = new AppCtx(TERM, ACTION, ORIENT);
+    // Act
+    const unwrapped = uut.unwrapCtx();
+    // Assert
+    expect(unwrapped).toMatchObject({
+      t: TERM,
+      a: ACTION,
+      o: ORIENT
+    });
+  });
+});
+
 describe('AppCtx adds data in order to define concrete Application Contexts during execution', () => {
   it('should create an AppCtx with empty data', () => {
     // Assemble