Merge #571: rustfmt: Change fn_args_layout to fn_params_layout

82b836e rustfmt: Change fn_args_layout to fn_params_layout (Tobin C. Harding)

Pull request description:

  Running `cargo +nightly fmt` emits a bunch of warnings of form:

   Warning: the `fn_args_layout` option is deprecated. Use `fn_params_layout`. instead

  As suggested change the `fn_args_layout` option to `fn_params_layout`.

ACKs for top commit:
  apoelstra:
    ACK 82b836e

Tree-SHA512: 106a480c641b22e370145409bf2286de3f67861dcfada0b9c8ad47117cffb06bd49c423365868b4fae36c5bfda39ca117dbe5339beb35de820622fe56f238759

Author: apoelstra

rustfmt.toml

@@ -44,7 +44,7 @@ enum_discrim_align_threshold = 0
 match_arm_blocks = true
 match_arm_leading_pipes = "Never"
 force_multiline_blocks = false
-fn_args_layout = "Tall"
+fn_params_layout = "Tall"
 brace_style = "SameLineWhere"
 control_brace_style = "AlwaysSameLine"
 trailing_semicolon = true