Break: make meta optional

src/error.rs

@@ -14,6 +14,7 @@ pub enum Error {
     #[error("failed to un-pickle")]
     UnpickleFailed(#[source] serde_pickle::Error),
 
+    #[cfg(feature = "meta")]
     #[error("failed to decode JSON")]
     JsonDecodeFailed(#[source] serde_json::Error),
 }

src/models.rs

@@ -4,4 +4,5 @@ mod meta;
 
 pub use self::battle_results::*;
 pub use self::battle_results_dat::*;
+#[cfg(feature = "meta")]
 pub use self::meta::*;

src/models/meta.rs

@@ -1,3 +1,5 @@
+#![cfg(feature = "meta")]
+
 use std::io::Read;
 
 use serde::Deserialize;

src/replay.rs

@@ -3,7 +3,9 @@ use std::io::{Read, Seek};
 use zip::ZipArchive;
 
 use crate::error::Error;
-use crate::models::{BattleResults, BattleResultsDat, Meta};
+#[cfg(feature = "meta")]
+use crate::models::Meta;
+use crate::models::{BattleResults, BattleResultsDat};
 use crate::result::Result;
 
 /// Opened (but not yet parsed) replay.
@@ -31,6 +33,7 @@ impl<R: Read + Seek> Replay<R> {
         BattleResultsDat::from_reader(pickled_battle_results)
     }
 
+    #[cfg(feature = "meta")]
     pub fn read_meta(&mut self) -> Result<Meta> {
         Meta::from_reader(
             self.0