message: Expose FuncResolver trait
diff: @@ -9,7 +9,7 @@ mod instance;
  mod table;
  mod sig_registry;
  -pub use self::backend::Compiler;
  +pub use self::backend::{Compiler, FuncResolver};
  pub use self::instance::{Instance, Imports, Import};
  pub use self::module::{ModuleName, ItemName, Module};
  