Update CHANGELOG for 0.3.0

Author: Glavo

CHANGELOG.md

@@ -1,14 +1,9 @@
 # Changelog
 
-## 0.2.0 (In development)
+## 0.4.0 (In development)
+
+## 0.3.0 (2026-03-25)
 
-- New API `NBTCodec#writeRegion(Path, ChunkRegion)` and `NBTCodec#writeRegion(Path, ChunkRegion, ExternalChunkAccessor)`
-  for writing chunk regions to files.
-- New API `NBTCodec#byteSize(Tag)` and `NBTCodec#contentByteSize(Tag)` for calculating the encoded byte size of NBT
-  tags.
-- New API `NBTCodec#writeTag(ByteBuffer, Tag)` for writing NBT tags to a byte buffer.
-- New API `NBTCodec#writeTagToByteArray(Tag)` for writing NBT tags to a byte array.
-- New API `ArrayTag#getElementType()` for getting the element type of array tags.
 - New API `NBTSchema` for validating NBT elements.
 
 ### Breaking Changes
@@ -17,6 +12,16 @@
     - [#test(NBTElement)]: Returns `true` if the element meets the rules of this validator, otherwise returns `false`.
     - [#validate(NBTElement)]: Does nothing if the element meets the rules of this validator, otherwise throws an
       exception.
+
+## 0.2.0 (2026-03-17)
+
+- New API `NBTCodec#writeRegion(Path, ChunkRegion)` and `NBTCodec#writeRegion(Path, ChunkRegion, ExternalChunkAccessor)`
+  for writing chunk regions to files.
+- New API `NBTCodec#byteSize(Tag)` and `NBTCodec#contentByteSize(Tag)` for calculating the encoded byte size of NBT
+  tags.
+- New API `NBTCodec#writeTag(ByteBuffer, Tag)` for writing NBT tags to a byte buffer.
+- New API `NBTCodec#writeTagToByteArray(Tag)` for writing NBT tags to a byte array.
+- New API `ArrayTag#getElementType()` for getting the element type of array tags.
 
 ## 0.1.0 (2026-03-16)