This is potentially subject to change in the near
future. This commit adds support for returning
an instance (currently wrapped in ForeignObject<>)
of a foreign object that is already instantiated.
The object returned this way simply gets selected
by handle into slot 0 of C Wren.
Conversely, returning just a naked object causes
wrenpp to make a Wren-accessible copy of it.
This commit breaks the ARM64 version, I will fix it next.
Lots going on here. DynafuncMaker got updated to store strings
to back the ModuleAndName objects that get hardcoded in the
assembly glue function.
ModuleAndName is not a typedef to a tuple anymore, because I
discovered that tuples suck. They get always pushed on the stack
when passed as parameter, instead the new implementation gets
passed into 2 registers being it a standard layout type.
dhandy::bt::string got updated so it can be used as a literal
value for non-type template parameters, which allowed for a
really easy to use `wren::MN<>` helper. Code now fully requires
c++20.
wren::get() can now be used to get foreign types by pointer.
Invoking get<A>() will return an A*. With this change it's
now possible to use variables() to get mixed foreign
and core types.
