# Cypress v0.18.8 — Release & Upgrade Intelligence
- **Product:** Cypress (https://www.cypress.io)
- **Version:** v0.18.8
- **Released:** Jul 19, 2018
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/cypress/updates/v0.18.8/

## Executive Summary (TL;DR)
Cypress v0.18.8. Source highlight: *Released 02/05/2017*

## New Features
- We've added our own special aliasing flavor to cy.stub() and cy.spy(). You can use the .as() command and we will associate spy and stub invocations (the same way we do with XHR aliasing and route matching).
- We've added cy.clock() and cy.tick() which are both asynchronous methods to modify timers in your application under test. We automatically apply clock (even if you invoke it before your first cy.visit()) and will automatically reapply it after page load. cy.tick() will enable you to control the amount of time you want passed in your application. This is great for controlling *throttled* or *debounced* functions.

## Bug Fixes
- We have officially implemented our Sinon.JS integration: adding cy.stub(), cy.spy(), cy.clock(), and cy.tick(). We've matched Sinon's API's and added `sinon-as-promised` and `chai-sinon`. In addition we've fixed Sinon performance issues, and improved the display of assertion passes and failures.
- You can now use cy.stub() and cy.spy() synchronously. These both match the Sinon API identically. We will display `stub/spy` calls in the command log and provide the call count, arguments, context, and return values when you click on the log. Stubs are automatically reset between tests.  Fixes #377.
- We've enhanced `chai-sinon` by improving the output during passes or failures. Fixes #31.