feat: fix and add new features

Author: zimuya4153

CHANGELOG.md

@@ -35,6 +35,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Added `VaillanI18n` API for modifying Minecraft vanilla language data
   @zimuya4153 @xianyubb
 - Added `toSNBT([space[,format]])` to all NBT object types @zimuya4153
+- Added `NbtCompound::hasTag(key)` for checking whether a compound contains a
+  tag @zimuya4153
 
 ### Changed
 
@@ -57,10 +59,18 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   `NbtCompound::toSNBT([space[,format]])` now supports explicitly selecting
   `SnbtFormat`; one-argument usage still defaults to `SnbtFormat::ForceQuote`
   @zimuya4153
+- Improved NBT parsing and mutation:
+  `NBT.parseSNBT(snbt)` now parses scalar and list SNBT values in addition to
+  compounds; `NbtCompound::set*` APIs now create missing keys automatically;
+  array/object-based NBT builders plus `NbtList::addTag` / `setTag` now accept
+  `null` as `EndTag` @zimuya4153
 
 ### Fixed
 
 - Fixed `NbtCompound::setTag` @zimuya4153
+- Fixed NBT list setter APIs so replacing existing elements no longer fails due
+  to stale type checks @zimuya4153
+- Fixed byte-list to-object conversion in the NBT JSON bridge @zimuya4153
 
 ## [0.19.0] - 2026-07-04