# Cypress v0.10.0 — Release & Upgrade Intelligence
- **Product:** Cypress (https://www.cypress.io)
- **Version:** v0.10.0
- **Released:** Jul 19, 2018
- **Impact Score:** 7/10
- **Breaking Changes:** Source flagged
- **Canonical Analysis:** https://changelogs.us/cypress/updates/v0.10.0/

## Executive Summary (TL;DR)
Cypress v0.10.0. Source highlight: *Released 08/06/2015*

## Breaking Changes & Deprecations
- Breaking Changes:** - Due to security upgrades, adding projects in previous versions will no longer work. Upgrade and everything should be okay.

## Bug Fixes
- Extensive memory profiling has been done and Cypress has implemented several strategies for aggressively causing garbage collection. The ebugging tools (which allow you to walk back in time through DOM snapshots, or access objects from previous tests) could exhaust all available emory in previous versions. This likely never affected most users, but if a user ran 1000's of tests (which have been written in Cypress) it ould bomb. Now Cypress only stores data for up to 50 tests, and will begin purg
- Sinon object formatting during errors has been suppressed (when using spies/stubs) due to its horrendous performance when comparing deeply nested objects. This means you won't see the (mostly) useless error output from Sinon, but given Cypress debugging tools you can still inspect objects and figure out what went wrong.