feat(cli): `clean` subcommand

The `clean` subcommand deletes files and directories which are not necessary for Whirl to function.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/lib.rs b/src/lib.rs
index 8c6c768..1c60e70 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -19,6 +19,8 @@ extern crate diesel;
 extern crate serde_derive;
 #[macro_use]
 extern crate async_trait;
+#[macro_use]
+extern crate simple_error;
 
 pub mod cli;
 pub mod config;