Use mimalloc as default memory allocator on client #160
Description
Suggested Changes
Replacing the default dlmalloc memory allocator on wasm32-unknown-unknown with mimalloc.
Why Is This Needed?
The author of the dlmalloc crate says it's not very performant.
Someone else made a benchmark of dlmalloc vs. mimalloc, which shows mimalloc as being much more performant.