| ⇢ | A | Collection::createIndex() added | |
| A | ↘ | B | Collection::initIndexes() got worse |
| B | ↘ | C | Collection::__construct() got worse |
| A | ↛ | GridFS::initCollection() removed | |
| A | ↛ | Collection::initCollection() removed | |
| A | ↛ | Cursor::toArray() removed | |
| A | ↛ | Document::belongsToCollection() removed |