There is still intent to support "no_std" feature for this crate. There is no need to support allocation hungry API such as WasmParser/WasmDecoder, so it will be beneficial to make this legacy API under feature -- the section readers is more performant API and has to be used at this moment.

TODOs:

• Make WasmParser and friends optional via feature (and/or deprecate)
• Cleanup sections readers to not use dynamic memory Box, Vec, HashMap

I think that will allow us to be no_std without depending on alloc or hashbrown crates.