Update HQX to latest (#943)

I've played a bit and added a non-invasive change to the HQX - CryZe/wasmboy-rs#1 - to work around the code size regression (rust-lang/rust#74947) introduced in the latest Rust.

As a side benefit of the change, the build time also went down significantly and now takes only 1 minute altogether - including spawning Docker, fetching Cargo, building Wasm and optimising it with wasm-opt - instead of 15-20 minutes it took before.

P.S. h/t @CryZe for a very quick review & publish.

Author: RReverser

codecs/hqx/Cargo.lock

@@ -13,7 +13,7 @@ default = ["console_error_panic_hook", "wee_alloc"]
 cfg-if = "0.1.2"
 wasm-bindgen = "0.2.38"
 # lazy_static = "1.0.0"
-hqx = {git = "https://github.com/CryZe/wasmboy-rs", tag="v0.1.2"}
+hqx = {git = "https://github.com/CryZe/wasmboy-rs", tag="v0.1.3"}
 
 # The `console_error_panic_hook` crate provides better debugging of panics by
 # logging them with `console.error`. This is great for development, but requires

codecs/hqx/Cargo.toml

@@ -1,6 +1,6 @@
 {
   "name": "hqx",
   "scripts": {
-    "build": "RUST_IMG=rust:1.40 ../build-rust.sh"
+    "build": "../build-rust.sh"
   }
 }