Can specify environment variables in client configuration

src/data/entity_manager.rs

@@ -1,5 +1,5 @@
 use std::path::{Path, PathBuf};
-use std::slice::Iter;
+use std::slice::{Iter, IterMut};
 
 use crate::utils::err::Res;
 
@@ -87,6 +87,11 @@ impl<E> EntityManager<E>
         self.list.iter()
     }
 
+    /// Iterate over the entries of this entity manager
+    pub fn iter_mut(&mut self) -> IterMut<'_, E> {
+        self.list.iter_mut()
+    }
+
     /// Get a cloned list of entries
     pub fn cloned(&self) -> Vec<E> {
         self.list.clone()