This is the first pure WebExtension release, compatible with Firefox 57+ only.
Notable changes since 5.1.4:
- CSP-based first-party script script blocking
- Active content blocking with DEFAULT, TRUSTED, UNTRUSTED and
CUSTOM (per site) presets
- Extremely responsive XSS filter leveraging the webRequest asynchronous API
- On-the-fly cross-site requests whitelisting
- Next to come: ClearClick and ABE (in the next few weeks).
- Fixed content process cross-framescript leak (thanks dorando for patch)