10 classes are annotated with ThunderOptionalModule in Thunder 8.4

Adsense in src/Plugin/Thunder/OptionalModule/Adsense.php

Adsense.

AMP in src/Plugin/Thunder/OptionalModule/AMP.php

AMP.

FacebookInstantArticles in src/Plugin/Thunder/OptionalModule/FacebookInstantArticles.php

Facebook Instant Articles.

GoogleAnalytics in src/Plugin/Thunder/OptionalModule/GoogleAnalytics.php

Google Analytics.

Harbourmaster in src/Plugin/Thunder/OptionalModule/Harbourmaster.php

Harbourmaster.

IvwIntegration in src/Plugin/Thunder/OptionalModule/IvwIntegration.php

IVW Integration.

Liveblog in src/Plugin/Thunder/OptionalModule/Liveblog.php

AMP.

NexxIntegration in src/Plugin/Thunder/OptionalModule/NexxIntegration.php

Riddle integration.

RiddleIntegration in src/Plugin/Thunder/OptionalModule/RiddleIntegration.php

Riddle integration.

ThunderDemo in src/Plugin/Thunder/OptionalModule/ThunderDemo.php

Thunder Demo Content.