update changelog

Author: lkdvos

docs/src/Changelog.md

@@ -20,6 +20,17 @@ When releasing a new version, move the "Unreleased" changes to a new version sec
 
 ## [Unreleased](https://github.com/QuantumKitHub/TensorKit.jl/compare/v0.16.0...HEAD)
 
+### Added
+
+- Extended support for selecting storage types in the `TensorMap` constructors ([#327](https://github.com/QuantumKitHub/TensorKit.jl/pull/327))
+- `similar_diagonal` to handle storage types when constructing diagonals ([#330](https://github.com/QuantumKitHub/TensorKit.jl/pull/330))
+
+### Fixed
+
+- Issue with using relative tolerances in truncation schemes ([#314](https://github.com/QuantumKitHub/TensorKit.jl/issues/314))
+- Using `scalartype` instead of `eltype` in BLAS contraction ([#326](https://github.com/QuantumKitHub/TensorKit.jl/pull/326))
+- Divide by zero error in `show` for empty tensors ([#329](https://github.com/QuantumKitHub/TensorKit.jl/pull/329))
+
 ## [0.16.0](https://github.com/QuantumKitHub/TensorKit.jl/releases/tag/v0.16.0) - 2025-12-08
 
 ### Added