Halting work on main program to re-integrate libraries.
Crash on file dialog. Does not happen in
wxWidgets sample code
Failure to record last used. Does not happen in
wxWidgets sample code
Failure to throw hash re-use exception
(the library always returns zero on hashing data into an
unfinalized, or finalizing an already finalized hash)
Need to use std::variant, with the variants being
monotype for the default init of hash and blob of unsigned
char for the init with an hsh argument, with a member
function blob that does get_if<1> and casts it to byte,
(and throws if it returns null) and for hsh, the variants
being monotype, the libsodium data structure,
and another monotype after the hash is finalized.
For every cross type constructor, you need a corresponding
static cast in the source type, so that copy construction works.
I don't know why << fails with a left hand type.
bd08d22cef