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

src/exit.rs

@@ -14,6 +14,7 @@ pub enum Transition {
 }
 
 impl From<&str> for Transition {
+    #[inline]
     fn from(str: &str) -> Transition {
         match str {
             "fade_w" => Transition::FadeToWhite,
@@ -30,6 +31,7 @@ impl From<&str> for Transition {
 }
 
 impl ToString for Transition {
+    #[inline]
     fn to_string(&self) -> String {
         match &self {
             Transition::FadeToWhite => " FX fade_w",
@@ -56,6 +58,7 @@ pub struct Exit {
 }
 
 impl From<String> for Exit {
+    #[inline]
     fn from(string: String) -> Exit {
         // e.g. "EXT 6,4 0 10,12 FX fade_w"
         let room_position_effect: Vec<&str> = string.split_whitespace().collect();
@@ -77,6 +80,7 @@ impl From<String> for Exit {
 }
 
 impl ToString for Exit {
+    #[inline]
     fn to_string(&self) -> String {
         format!(
             "{} {}{}",