Release 0.12.2 (#1407)

- [x] Make sure `stable` branch does not exist (on both github and local, delete it if it does)
- [x] Pull master
- [x] Create new local branch `stable`
- [x] Update changelog
- [x] Update root package version (only [root package.json](https://github.com/auth0/cosmos/blob/master/package.json#L3))
- [x] Commit and push (**pushing to stable branch with new version will trigger jenkins release task**)
- [x] Wait for [jenkins task](https://tools-jenkins-us-west-2.forge.auth0.net/blue/organizations/jenkins/cosmos/activity/) to be completed  (confirm it published the version you wanted under `npm run scripts deploy`)
- [x] Run `yarn scripts deploy.catchup` on local `stable` branch and push
- [x] Merge PR to master
- [ ] Go to [zeit dashboard](https://zeit.co/dashboard/deployments) and create an alias for the latest deployment) (example: `now alias cosmos-rzbpuowrox.now.sh auth0-cosmos-0-8-0.now.sh --team=auth0-design`)
- [ ] Create a [new release on github](https://github.com/auth0/cosmos/releases)
- [ ] Delete stable branch on github
- [ ] Announce it on the slack channel: [design-system](https://auth0.slack.com/messages/C5ZK0DD8X/)

Author: Franco Correa

changelog.md

@@ -4,6 +4,36 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/). Currently, this project is using an `0.x` versioning system to indicate its preview status. As such, it does _not_ currently adhere to [Semantic Versioning](http://semver.org/spec/v2.0.0.html). Once we reach production readiness, we will follow semver beginning with our `1.0` release. In the meantime, please read this changelog for information on breaking changes!
 
+## 0.12.2 [January 9, 2019]
+
+### Fixed
+
+- Icon: Add “application” icon. [#1401]
+- Alternate implementation for uniqueId: This improves snapshot testing experience by removing random hashes from components attributes. [#1374] (Warning: You may need to update some snapshots and remove any uniqueId mock.)
+- Breadcrumb: Fix automation attribute naming. [#1309] (Warning: You may need to update some tests.)
+
+**Breadcrumb change**
+
+We have renamed the Breadcrumb.Link automation attribute from this:
+`<a data-cosmos-key="link">clicky</a>`
+to this:
+`<a data-cosmos-key="breadcrumb.link">clicky</a>`
+
+Please update your tests (if any) accordingly.
+
+**UniqueId helper change**
+
+In the past, we used to randomly generate an id for some attributes that were required to link components.
+Now we're using a global counter, which will lead to improve snapshot testing since each test is run in an isolated environment, and then each test run will have a fresh and pure start.
+
+If you were using a mock for `uniqueId` as a workaround:
+
+```js
+jest.mock('../../../core/components/_helpers/uniqueId', () => () => 'abcdef1234')
+```
+
+Please, remove it since is no longer needed.
+
 ## 0.12.1 [January 8, 2019]
 
 ### Fixed

package.json

@@ -1,6 +1,6 @@
 {
   "name": "cosmos",
-  "version": "0.12.1",
+  "version": "0.12.2",
   "engine": "^7.0.0",
   "private": true,
   "workspaces": [