| ⇢ | A | Draft added |
| ⇢ | B | Draft::saveDraft() added | |
| ⇢ | A | Draft::__construct() added | |
| ⇢ | A | Draft::getDraftText() added | |
| ⇢ | A | Draft::deleteDraft() added | |
| ⇢ | A | Draft::getDraftMessage() added | |
| ⇢ | A | Draft::getDraftFilename() added | |
| ⇢ | A | Draft::isDraftAvailable() added | |
| ⇢ | A | Draft::getErrors() added | |
| B | ↗ | A | Preview::savedraft() improved |
| C | ↗ | B | Ajax::call_lock() improved |