disallow stars in VersionNumber parser

src/atom/parsers.rs

@@ -40,10 +40,7 @@ impl<'a> Parseable<'a, &'a str> for VersionNumber {
     type Parser = impl Parser<&'a str, Output = Self>;
 
     fn parser() -> Self::Parser {
-        numeric1()
-            .followed_by(tag("*").opt())
-            .recognize()
-            .map(|output: &str| VersionNumber(output.to_string()))
+        numeric1().map(|output: &str| VersionNumber(output.to_string()))
     }
 }