Features from optional dependencies

console_error_panic_hook wasm32 implicit feature

Enables console_error_panic_hook

console_error_panic_hook:

A panic hook for wasm32-unknown-unknown that logs panics to console.error

wee_alloc wasm32 implicit feature

Enables wee_alloc

wee_alloc:

wee_alloc: The Wasm-Enabled, Elfin Allocator