warning: `to_string()` called on a `&str`
  --> src/commit_message/mod.rs:25:31
   |
25 |     if !skip_commit.contains(&"commit_footer".to_string()) {
   |                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = help: consider using `.to_owned()`
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#str_to_string
note: the lint level is defined here
  --> src/main.rs:6:5
   |
6  |     clippy::str_to_string
   |     ^^^^^^^^^^^^^^^^^^^^^