Cut down on macro nonsense

- InertAtomic replaced atomic_inert! for improved tooling support
- atomic_defaults! is easier to type out than to explain in a docstring
- Changed rustfmt config to better support tiny functions such as as_any

src/foreign/mod.rs

@@ -5,11 +5,13 @@
 mod atom;
 pub mod cps_box;
 mod extern_fn;
+mod inert;
 
 use std::rc::Rc;
 
 pub use atom::{Atom, Atomic, AtomicResult, AtomicReturn};
 pub use extern_fn::{ExternError, ExternFn, XfnResult};
+pub use inert::InertAtomic;
 
 pub use crate::representations::interpreted::Clause;