fix(Idle): do not pause interrupts when idle

Interrupts should only be paused on timeout so user activity can automatically reset idle state

Fixes #4 and #5

src/idle.spec.ts

@@ -194,17 +194,19 @@ export function main() {
           expect(source.isAttached).toBe(false);
         });
 
-        it('watch() should attach all interrupts when resuming after idle',
+        it('watch() should attach all interrupts when resuming after timeout',
            <any>fakeAsync((): void => {
              let source = new MockInterruptSource();
 
+             instance.setTimeout(3);
              instance.setInterrupts([source]);
              instance.watch();
 
              expect(source.isAttached).toBe(true);
 
-             tick(3000);
+             tick(6000);
 
+             expect(instance.isIdling()).toBe(true);
              expect(source.isAttached).toBe(false);
 
              instance.watch();
@@ -245,7 +247,7 @@ export function main() {
              expect(instance.isIdling()).toBe(false);
            }));
 
-        it('should pause interrupts when idle', <any>fakeAsync((): void => {
+        it('should NOT pause interrupts when idle', <any>fakeAsync((): void => {
              let source = new MockInterruptSource();
 
              instance.setInterrupts([source]);
@@ -255,7 +257,7 @@ export function main() {
 
              expect(instance.isIdling()).toBe(true);
 
-             expect(source.isAttached).toBe(false);
+             expect(source.isAttached).toBe(true);
 
              instance.stop();
            }));

src/idle.ts

@@ -261,7 +261,6 @@ export class Idle implements OnDestroy {
     this.idling = !this.idling;
 
     if (this.idling) {
-      this.toggleInterrupts(false);
       this.onIdleStart.emit(null);
       this.stopKeepalive();