Version number bump: 1.4.2: Remove double-dependency from build dep g…

…raph (#4). Replace removed nightly `Vec::drain_filter`, replace with stable `Vec::retain` (#5).

Fortune for smallmap's current commit: Curse − 凶

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 = "1.4.1"
+version = "1.4.2"
 authors = ["Avril <flanchan@cumallover.me>"]
 edition = "2018"
 license = "MIT"