6.0

Breaking Changes

• Minimum required PHP version increased to 7.4.

Other Changes

• Fixed custom update metadata fields added using the retain_fields filter not being saved in the database.
• Updated the Parsedown library to version 1.8.0 due to potential security issues (see #615). These issues are unlikely to affect PUC in practice since the content that's rendered using Parsedown comes from the plugin/theme developer and is presumably non-malicious, but this seems like a reasonable precaution.
• PUC now uses esc_url() instead of esc_attr() for escaping the URL of the "Check for updates" link.