Release v1.1.11.4

This release fixes a core issue in the implementation of Poseidon v2.7.0, where multiple columns of the .ssf file where not defined correctly as list columns. Poseidon v2.7.0 is in itself deprecated, though, and will be replaced as soon as possible with an updated version. This trident release exists thus mainly to provide a working implementation of 2.7.0 for future reference.

Beyond this change in functionality, this release also includes heavy refactoring in the survey subcommand, the golden test infrastructure and the overall version of Haskell poseidon-hs and trident are built with. These changes should not have any user-facing consequences.