const-util

Provides stable const implementations for some things missing from the standard library.

Currently implemented are

• Functions in the [concat] module to concat const strings and byte slices.
• [destruct_tuple] to destructure tuples with generic types or types with drop glue in them
• [mem::nonnull_from] to create [core::ptr::NonNull]s from mutable and regular references conveniently
• [mem::man_drop_ref]/[mem::man_drop_mut] as a workaround for the lack of const Deref implementations

License: MIT