Fix handling of Delimiter::Bang

Author: SimonSapin

Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 
 name = "cssparser"
-version = "0.3.7"
+version = "0.3.8"
 authors = [ "Simon Sapin <simon.sapin@exyr.org>" ]
 
 description = "Rust implementation of CSS Syntax Level 3"

src/parser.rs

@@ -155,6 +155,7 @@ impl Delimiters {
     fn from_byte(byte: Option<u8>) -> Delimiters {
         match byte {
             Some(b';') => Delimiter::Semicolon,
+            Some(b'!') => Delimiter::Bang,
             Some(b',') => Delimiter::Comma,
             Some(b'{') => Delimiter::CurlyBracketBlock,
             Some(b'}') => ClosingDelimiter::CloseCurlyBracket,