Refactoring discussions

Directories and namespaces

• Namespace and location of QueryInput, QueryResult and QueryBuilder (currently armem::client::)
• Move armem/query into "server area" (this is where queries are processed, not built)
• Rename directory armem/component into something like server? Create a server namespace (similar to client)?
• see below

Code style

• Use using instead of typedef

Design

• Use values instead of std::unique_ptr in Memory data structure
• Use std::filesystem::path in EasyStringEntityHistory
• [Rejected] Store type information in EntityInstance. Maybe also in Entity and EntitySnapshot. (To this end, TypedEntityContainer could be made independent of EntityContainer, as its only a member + some functions.)

DiskWriter

• Avoid creating a directory in DiskWriter (default) constructor
• Add a DiskWriter.cpp
• Add virtual destructors (DiskWriter, NlohmannJSONDiskWriter)