| ⇢ | C | ResourceNode added | |
| ⇢ | A | CourseListener added | |
| ⇢ | A | ResourceLink added | |
| ⇢ | A | TicketPriority added | |
| ⇢ | A | TicketCategory added | |
| ⇢ | A | ResourceFile added | |
| ⇢ | A | TicketProject added | |
| ⇢ | A | CourseAccessListener added | |
| ⇢ | A | TicketMessage added | |
| ⇢ | A | ResolveResourceFileContentUrlSubscriber added | |
| ⋮ | view more | ||
| C | ↛ | ResourceNode removed | |
| A | ↛ | CourseListener removed | |
| A | ↛ | Category removed | |
| A | ↛ | Priority removed | |
| A | ↛ | SessionAccessListener removed | |
| A | ↛ | ResourceType removed | |
| A | ↛ | ResourceLink removed | |
| A | ↛ | AbstractResource removed | |
| A | ↛ | ResourceComment removed | |
| A | ↛ | Status removed | |
| ⋮ | view more | ||