Minor version bump for (https://github.com/notflan/smallmap/pull/2)

`Index` + `IndexMut` impls, methods for iterating over keys and values seperately.

Fortune for smallmap's current commit: Half blessing − 半吉

Cargo.toml

@@ -4,7 +4,7 @@ description = "Small byte-sized generic key-value map type"
 keywords = ["map", "table", "small", "key", "value"]
 repository = "https://github.com/notflan/smallmap"
 homepage= "https://git.flanchan.moe/flanchan/smallmap"
-version = "1.3.4"
+version = "1.4.0"
 authors = ["Avril <flanchan@cumallover.me>"]
 edition = "2018"
 license = "MIT"