options/value-traits: fix bool storage

Using int as `stored_type' for bool made Qt signals not
work. Evident when ticking the "asymmetric mapping"
checkboxes in the mapping window.

Remove some std::decay_t usage, there's no need for
either decay or remove_cvref.

In `value<t>::get()', `bundle::get_variant' of an
undefined key will fall back to `return def' so remove
the duplicate logic.

0 files changed, 0 insertions, 0 deletions