implement ToBase36 for u64; room id to u64; sprite id to u64; tile id to u64; sprite.dialogue -> sprite.dialogue_id

src/palette.rs

@@ -1,5 +1,5 @@
 use crate::colour::Colour;
-use crate::{from_base36, to_base36};
+use crate::{from_base36, ToBase36};
 
 #[derive(Debug, Eq, PartialEq)]
 pub struct Palette {
@@ -44,7 +44,7 @@ impl ToString for Palette {
         }
         colours.pop();
 
-        format!("PAL {}\n{}{}", to_base36(self.id), name, colours)
+        format!("PAL {}\n{}{}", self.id.to_base36(), name, colours)
     }
 }