perf(ecs): use hashbrown's HashMap & HashSet

Hashbrown's HashMap & HashSet is faster than std's. I
guess this is because std (which uses hashbrown) does
not enable hashbrown's default-hasher flag and instead
uses a slower hasher.

1 files changed, 2 insertions, 1 deletions

diff --git a/ecs/src/lib.rs b/ecs/src/lib.rs
index 3926344..43a00f1 100644
--- a/ecs/src/lib.rs
+++ b/ecs/src/lib.rs
@@ -2,12 +2,13 @@
 
 use std::any::{type_name, TypeId};
 use std::cell::RefCell;
-use std::collections::HashMap;
 use std::fmt::Debug;
 use std::mem::ManuallyDrop;
 use std::sync::atomic::{AtomicBool, Ordering};
 use std::sync::Arc;
 
+use hashbrown::HashMap;
+
 use crate::actions::Action;
 use crate::component::storage::Storage as ComponentStorage;
 use crate::component::{