| ⇢ | A | SerializeException added | |
| ⇢ | A | ModelManager added | |
| ⇢ | A | FileException added | 
| ⇢ | B | ModelManager::saveToFile() added | |
| ⇢ | A | ModelManager::restoreFromFile() added | |
| ⇢ | A | FileException::cantOpenFile() added | |
| ⇢ | A | FileException::cantSaveFile() added | |
| ⇢ | A | SerializeException::cantUnserialize() added | |
| ⇢ | A | SerializeException::cantSerialize() added | |
| ⇢ | A | FileException::missingFile() added | |
| A | ↛ | DatasetException::cantOpenFile() removed | |
| A | ↛ | DatasetException::missingFile() removed |