Merged requested to merge AM_mc_association into master
This MR supports storage of output of
MAP_INPUT functor that returns
In this regard, it adds a helper class
LHCb::FTuple::InvalidValue to store default (invalid) value when
std::nullopt is returned. Idea arose from discussions with @graven in this MR `(Rec!2666 (closed)) (particularly in this comment).
Also support tupling of
SIMDWrapper::scalar::float_v, avoid explicit
std::any declaration, fix to
fill_ method of non-symmetric matrices and clean-up obsolete header file inclusion.
This MR is related to (but not dependent on): Rec!2666 (closed)