NBT: Allow parsing from compressed data

src/nbt/NBT.cpp

@@ -164,6 +164,11 @@ namespace NBT
     {
     }
 
+    CompoundTag::CompoundTag(const void* data, size_t length)
+        : CompoundTag(nbt_parse_compressed(data, length))
+    {
+    }
+
     CompoundTag::~CompoundTag()
     {
         nbt_free(m_node);

src/nbt/NBT.h

@@ -136,7 +136,11 @@ namespace NBT
     public:
         CompoundTag(nbt_node* node) : Tag(node) {}
 
-        CompoundTag(const char *filename);
+        CompoundTag(const char* filename);
+
+        // Read a compound tag from compressed data
+        CompoundTag(const void* data, size_t length);
+
         ~CompoundTag();
 
         template <typename T>