Materia v6.0.2

6.0.2 is a small hotfix update to add minor improvements to Heroku deploys and include the newly required SameSite=None cookie headers for recent browser versions.

Included in this release:

• Updates default widget versions in deployment config which include minified assets (fixes #1277, #1278)
• Adds 'Secure' and 'SameSite' headers to cookies (fixes #1275)
• Adds a warning on the admin panel when hosted on Heroku warning of its tendency to break widget installations (fixes #1276)