bump version of hashbrown and new release (closes #19)

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "internment"
-version = "0.4.0"
+version = "0.4.1"
 authors = ["David Roundy <roundyd@physics.oregonstate.edu>"]
 edition = "2018"
 
@@ -29,15 +29,15 @@ lazy_static = "1.4.0"
 once_cell = "1.4"
 state = { version = "0.4.1", features = ["tls"] }
 tinyset = "0.4.2"
-hashbrown = { version = "0.8" }
+hashbrown = { version = "0.9" }
 serde = { version = "1.0", optional = true }
 
 [dev-dependencies]
 
-quickcheck = "^0.4.1"
+quickcheck = "^0.9.2"
 easybench = { version = "1.0.0", git = "https://github.com/droundy/easybench-rs" }
 rand = "0.7.2"
-arc-interner = "0.4"
+arc-interner = "0.5"
 
 [[bench]]
 name = "bench"