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/query/options.rs b/ecs/src/query/options.rs
index ead0ac7..772d091 100644
--- a/ecs/src/query/options.rs
+++ b/ecs/src/query/options.rs
@@ -1,6 +1,7 @@
-use std::collections::HashSet;
 use std::marker::PhantomData;
 
+use hashbrown::HashSet;
+
 use crate::component::Component;
 use crate::EntityComponent;