Expose function to add decompression chunks

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "bdflib"
-version = "0.4.2"
+version = "0.4.3"
 authors = ["trivernis <trivernis@gmail.com>"]
 edition = "2018"
 license-file = "LICENSE"

src/io.rs

@@ -273,7 +273,7 @@ impl BDFReader {
     }
 
     /// Adds a chunk to the decompression channel to be decompressed by a worker thread
-    fn add_compression_chunk(&mut self) -> Result<(), Error> {
+    pub fn add_compression_chunk(&mut self) -> Result<(), Error> {
         let gen_chunk = self.next_chunk_raw()?;
         if gen_chunk.name == DTBL_CHUNK_NAME.to_string() && self.compressed {
             if let Err(_) = self.thread_manager.sender_work.send(gen_chunk) {