Use edition in rustfmt.toml when no command line argument is passed
Use edition in rustfmt.toml when no command line argument is passed

SingingTree/rustfmt,graydon/rust,aidancully/rust,rust-lang/rustfmt,graydon/rust,graydon/rust,graydon/rust,aidancully/rust,aidancully/rust,rust-lang/rustfmt,aidancully/rust,graydon/rust,SingingTree/rustfmt,aidancully/rust,graydon/rust,aidancully/rust