# CSSOM changelog > CSSOM release notes. - Vendor: CSSOM - Category: Frameworks & Libraries - Official site: https://github.com/NV/CSSOM#readme - Tracked by: What's New (https://whatsnew.fyi/product/cssom) - Harvested from: GitHub (nv/cssom) - Entries below: 1 (newest first) What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog. ## Releases ### v0.3.0 — 0.3.0 - Date: 2013-11-09 - Version: v0.3.0 - Original notes: https://github.com/NV/CSSOM/releases/tag/v0.3.0 - Permalink: https://whatsnew.fyi/product/cssom/releases/v0.3.0 - Allow `\'` and `\"` escape sequences in strings, albeit not full escape sequence support. - Support IE `expression()` values (#45). - Support `@-moz-document` (#47). - Fix some issues in older Firefox and IE browsers. - Correctly set `parentStyleSheet` on rules added via `insertRules`. - Fix package.json jake version to be modern.