change license in cargo.toml

Author: burgerindividual

Cargo.toml

@@ -3,7 +3,7 @@ name = "fath"
 authors = [ "burgerindividual", "duplexsystem" ]
 version = "0.1.3"
 edition = "2021"
-license = "GPL-3.0"
+license = "LGPL-3.0"
 repository = "https://github.com/burgerindividual/fath"
 description = "Fa(st ma)th library built for speed."
 keywords = ["math", "no_std", "graphics", "fast"]