Unstable feature that makes rayon work

Author: IvanIsCoding

.cargo/config.toml

@@ -18,4 +18,7 @@ rustflags = [
   "-C", "link-arg=-s", "-C", "link-arg=EXPORT_NAME=createModule",
   "-C", "link-arg=-s", "-C", "link-arg=EXPORT_ES6=1",
   "-C", "link-arg=-s", "-C", "link-arg=ASSERTIONS=1"
-]
+]
+
+[unstable]
+build-std = ["std", "panic_abort"]