Actually create a field for this in DmfModule 💀

src/reskit/soundtrack/formats/dmf.rs

@@ -78,6 +78,7 @@ pub struct DmfModule {
     frame_mode: FrameMode,
     rows_per_pattern: u32,
     pattern_matrix: Vec<Vec<u16>>,
+    channel_patterns: Vec<Vec<PatternRow>>,
     instruments: Vec<Instrument>,
     samples: Vec<Sample>
 }
@@ -604,7 +605,7 @@ impl DmfModule {
         Ok(
             DmfModule {
                 platform, version, time_base, speed_a, speed_b, frame_mode, rows_per_pattern,
-                pattern_matrix, instruments, samples
+                pattern_matrix, channel_patterns, instruments, samples
             }
          )
     }