Remove 2nd Tokio Runtime in Auto Splitting Runtime (#854)

Wasmtime's WASI implementation nowadays internally has its own Tokio
runtime. You can only ever run a single Tokio runtime on a thread at the
same time. Wasmtime provides async support, so this likely would have
also solved the issue. However, this probably would've made it harder to
use the runtime in other situations. So instead we just remove our own
runtime, which was not really necessary anyway.

Cargo.toml

@@ -91,11 +91,7 @@ splits-io-api = { version = "0.4.0", optional = true }
 
 # Auto Splitting
 livesplit-auto-splitting = { path = "crates/livesplit-auto-splitting", version = "0.1.0", optional = true }
-tokio = { version = "1.24.2", default-features = false, features = [
-    "rt",
-    "sync",
-    "time",
-], optional = true }
+arc-swap = { version = "1.7.1", optional = true }
 log = { version = "0.4.14", default-features = false, optional = true }
 
 [target.'cfg(all(target_family = "wasm", target_os = "unknown"))'.dependencies]
@@ -191,7 +187,7 @@ wasm-web = [
     "web-sys",
 ]
 networking = ["std", "splits-io-api"]
-auto-splitting = ["std", "livesplit-auto-splitting", "tokio", "log"]
+auto-splitting = ["std", "livesplit-auto-splitting", "arc-swap", "log"]
 
 [lib]
 bench = false

crates/livesplit-auto-splitting/src/runtime/mod.rs

@@ -190,16 +190,16 @@ fn single_process() -> ProcessRefreshKind {
 #[non_exhaustive]
 pub struct Config {
     /// This enables debug information for the WebAssembly module. This is
-    /// useful for debugging purposes. By default this `true` if the feature
+    /// useful for debugging purposes. By default this is `true` if the feature
     /// `debugger-support` is enabled.
     pub debug_info: bool,
     /// This enables optimizations for the WebAssembly module. This is enabled
     /// by default. You may want to disable this when debugging the auto
     /// splitter.
     pub optimize: bool,
     /// This enables backtrace details for the WebAssembly module. If a trap
-    /// occurs more details are printed in the backtrace. By default this `true`
-    /// if the feature `enhanced-backtrace` is enabled.
+    /// occurs more details are printed in the backtrace. By default this is
+    /// `true` if the feature `enhanced-backtrace` is enabled.
     pub backtrace_details: bool,
 }