allow inlining (this did not provide a statistically significant performance boost - oh well)

src/item.rs

@@ -10,20 +10,24 @@ pub struct Item {
 }
 
 impl Item {
+    #[inline]
     fn name_line(&self) -> String {
         optional_data_line("NAME", self.name.as_ref())
     }
 
+    #[inline]
     fn dialogue_line(&self) -> String {
         optional_data_line("DLG", self.dialogue_id.as_ref())
     }
 
+    #[inline]
     fn colour_line(&self) -> String {
         optional_data_line("COL", self.colour_id.as_ref())
     }
 }
 
 impl From<String> for Item {
+    #[inline]
     fn from(string: String) -> Item {
         let mut lines: Vec<&str> = string.lines().collect();