| ⇢ | A | AbstractContentFormType added | |
| A | ↛ | AbstractContentFormType removed | 
| ⇢ | A | AbstractContentFormType::getBlockPrefix() added | |
| ⇢ | A | AbstractContentFormType::configureOptions() added | |
| A | ↛ | AbstractContentFormType::configureOptions() removed | |
| A | ↛ | AbstractContentFormType::getBlockPrefix() removed |