Unable to open Diablo II MPQ files

[willroberts]

Opening Diablo II MPQ files (e.g. d2data.mpq or d2exp.mpq) currently returns ErrInvalidArchive.

[icza]

Quoting from the project README:

This is not a full MPQ implementation. It is primarily intended to parse StarCraft II replay files (*.SC2Replay), but that is fully supported.

My goal was never to write a full MPQ parser, so it may very well be that other MPQ archives are not supported.