more minor work

src/lib.rs

@@ -1,3 +1,7 @@
+pub enum ProgrammingLanguage {
+    None,
+}
+
 pub struct RGBA {
     red: u8,
     green: u8,
@@ -10,4 +14,8 @@ pub struct Header {
     level: u8,
 }
 
+pub struct CodeBlock {
+    language: ProgrammingLanguage,
+    text: String,
+}
 pub fn parse() {}