message: Fix typo in bindings
  Summary: bingings => bindings
diff: @@ -149,7 +149,7 @@ pub(crate) fn render_fun(x: StarFun) -> syn::Result<TokenStream> {
  (None, None)
  };
  - let Bingings { prepare, bindings } = binding;
  + let Bindings { prepare, bindings } = binding;
  let binding_params: Vec<_> = bindings.map(|b| b.render_param());
  let binding_args: Vec<_> = bindings.map(|b| b.render_arg());
  @@ -197,14 +197,14 @@ pub(crate) fn render_fun(x: StarFun) -> syn::Result<TokenStream> {
  })
  }
  -struct Bingings {
  +struct Bindings {
  prepare: TokenStream,
  bindings: Vec<BindingArg>,
  }
  // Given __args and __signature (if render_signature was Some)
  // create bindings for all the arguments
  -fn render_binding(x: &StarFun) -> Bingings {
  +fn render_binding(x: &StarFun) -> Bindings {
  let span = x.args_span();
  match x.source {
  StarFunSource::Parameters => {
  @@ -216,7 +216,7 @@ fn render_binding(x: &StarFun) -> Bingings {
  ..
  } = &x.args[0];
  let span = *span;
  - Bingings {
  + Bindings {
  prepare: quote_spanned! { span=> },
  bindings: vec![BindingArg {
  name: name.to_owned(),
  @@ -237,7 +237,7 @@ fn render_binding(x: &StarFun) -> Bingings {
  } = &x.args[1];
  let span = *span;
  let this = render_binding_arg(&x.args[0]);
  - Bingings {
  + Bindings {
  prepare: quote_spanned! { span=> },
  bindings: vec![
  this,
  @@ -253,7 +253,7 @@ fn render_binding(x: &StarFun) -> Bingings {
  }
  StarFunSource::Argument(arg_count) => {
  let bind_args: Vec<BindingArg> = x.args.map(render_binding_arg);
  - Bingings {
  + Bindings {
  prepare: quote_spanned! { span=>
  let __args: [_; #arg_count] = self.signature.collect_into(parameters, eval.heap())?;
  },
  @@ -263,7 +263,7 @@ fn render_binding(x: &StarFun) -> Bingings {
  StarFunSource::Positional(required, optional) => {
  let bind_args = x.args.map(render_binding_arg);
  if optional == 0 {
  - Bingings {
  + Bindings {
  prepare: quote_spanned! {
  span=>
  parameters.no_named_args()?;
  @@ -272,7 +272,7 @@ fn render_binding(x: &StarFun) -> Bingings {
  bindings: bind_args,
  }
  } else {
  - Bingings {
  + Bindings {
  prepare: quote_spanned! {
  span=>
  parameters.no_named_args()?;
  