Direct-access type unification
Submitted by Benoit Jacob
Assigned to Nobody
Link to original bugzilla bug (#58)
Description
All direct access Block/Map types should be unified so as to reduce as much as possible the number of template instantiations. E.g. Block<Block<Matrix>> is just a Map. This could mean that the return type of block(...) becomes an internal thing that we must always hide behind a BlockReturnType helper.