First docs

Author: freya022

api/src/main/java/dev/freya02/discord/zstd/api/ZstdDecompressor.java

@@ -2,6 +2,12 @@
 
 import org.jspecify.annotations.NullMarked;
 
+/**
+ * A Zstandard streaming decompressor for Discord gateway messages.
+ * <br>Each message needs to be passed in the same order they were received, none must be skipped.
+ *
+ * <p>Note: Instances are <b>not</b> thread safe, as there should be an instance per gateway connection, which uses 1 read thread.
+ */
 @NullMarked
 public interface ZstdDecompressor {
     void reset();