Update wasm example

Removed wasm-pack config now that issue is fixed:
rustwasm/wasm-pack#886

ensure_wasm/Cargo.toml

@@ -13,20 +13,20 @@ crate-type = ["cdylib", "rlib"]
 default = ["console_error_panic_hook", "wee_alloc"]
 
 [dependencies]
-wasm-bindgen = "=0.2.68"
+wasm-bindgen = "0.2.73"
 
 # The `console_error_panic_hook` crate provides better debugging of panics by
 # logging them with `console.error`. This is great for development, but requires
 # all the `std::fmt` and `std::panicking` infrastructure, so isn't great for
 # code size when deploying.
-console_error_panic_hook = { version = "0.1.1", optional = true }
+console_error_panic_hook = { version = "0.1", optional = true }
 
 # `wee_alloc` is a tiny allocator for wasm that is only ~1K in code size
 # compared to the default allocator's ~10K. It is slower than the default
 # allocator, however.
 #
 # Unfortunately, `wee_alloc` requires nightly Rust when targeting wasm for now.
-wee_alloc = { version = "0.4.2", optional = true }
+wee_alloc = { version = "0.4", optional = true }
 
 deku = { path = "../" }
 hex = "0.4"
@@ -37,7 +37,3 @@ wasm-bindgen-test = "0.3"
 [profile.release]
 # Tell `rustc` to optimize for small code size.
 opt-level = "s"
-
-# https://github.com/rustwasm/wasm-pack/issues/886#issuecomment-667669802
-[package.metadata.wasm-pack.profile.release]
-wasm-opt = ["-Oz", "--enable-mutable-globals"]