todo: header machinery in file (file.add_block)

src/file.rs

@@ -51,19 +51,19 @@ pub(crate) enum FourCC{
 }
 #[binrw]
 #[brw(little)]
-struct Header{
+pub struct Header{
 	/// Type of file
-	fourcc:FourCC,
-	/// Type version
-	version:u32,
+	pub fourcc:FourCC,
+	/// File format version
+	pub version:u32,
 	/// Minimum data required to know the location of all streamable resources for this specific file
-	priming:u64,
+	pub priming:u64,
 	/// uuid for this file
-	resource:u128,
+	pub resource:u128,
 	//don't need try_calc: the struct will force field initialization anyways and it can be calculated there
-	block_count:u32,
+	pub block_count:u32,
 	#[br(count=block_count+1)]
-	block_location:Vec<u64>,
+	pub block_location:Vec<u64>,
 }
 
 #[binrw]