replace cached dep with custom hashmap thing

i benchmarked it with hyperfine and in terms of performance it's pretty much identical, with a slight (fraction of a percent) advantage to my implementation

Cargo.lock

@@ -37,16 +37,6 @@ version = "1.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "14c189c53d098945499cdfa7ecc63567cf3886b3332b312a5b4585d8d3a6a610"
 
-[[package]]
-name = "cached"
-version = "0.25.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b99e696f7b2696ed5eae0d462a9eeafaea111d99e39b2c8ceb418afe1013bcfc"
-dependencies = [
- "hashbrown 0.9.1",
- "once_cell",
-]
-
 [[package]]
 name = "cfb"
 version = "0.4.0"
@@ -188,7 +178,6 @@ name = "fif"
 version = "0.3.6"
 dependencies = [
  "bitflags",
- "cached",
  "cfg-if",
  "clap",
  "clap_derive",
@@ -228,12 +217,6 @@ version = "0.3.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9b919933a397b79c37e33b77bb2aa3dc8eb6e165ad809e58ff75bc7db2e34574"
 
-[[package]]
-name = "hashbrown"
-version = "0.9.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "d7afe4a420e3fe79967a00898cc1f4db7c8a49a9333a29f8a4bd76a253d5cd04"
-
 [[package]]
 name = "hashbrown"
 version = "0.11.2"
@@ -265,7 +248,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "bc633605454125dec4b66843673f01c7df2b89479b32e0ed634e43a91cff62a5"
 dependencies = [
  "autocfg",
- "hashbrown 0.11.2",
+ "hashbrown",
 ]
 
 [[package]]

Cargo.toml

@@ -75,10 +75,6 @@ version = "0.9.0"
 default-features = false
 features = ["termcolor", "atty"]
 
-[dependencies.cached]
-version = "0.25.0"
-default-features = false
-
 [dev-dependencies]
 tempfile = "3.2.0"
 rand = "0.8.3"