Refactor ArchiveNode and ArchiveDirNode classes into one ArchiveEntry class (see T2704)
Refactor ArchiveEntry to Archive::Entry and move it to Kerfuffle (see comments in T2704)
Fix new bugs caused by refactoring
Q_PROPERTY refactoring (unfinished)
Finish refactoring, fix all discovered bugs related to it.
Remove redundant field.