Preserve symbol metadata (e.g. type hints)

[setzer22]

When using some of the arrow macros, like -<>, it seems type hinting does not work. Consider the following two examples:

(as-> "Hello" <> (.toUpperCase ^String <>))

(-<> "Hello" <> (.toUpperCase ^String <>))

While both have the exact same result, running (set! *warn-on-reflection* true) reveals the one using -<> is not preserving the type hint on the generated code, while the one using as-> does.

Is this intended, or you think it could be fixed?

Btw, many thanks for the great library!