Update changelog and version

Author: kipcole9

CHANGELOG.md

@@ -1,5 +1,13 @@
 # Changelog
 
+## v0.7.0 (2026-05-10)
+
+### Enhancements
+
+* Added `gb` as an alias for `gigabyte` so it doesn't collide with GNU's `gilbert` after `Unity.GnuUnitsImporter.import/0`.
+
+* Conversion errors now include each side's base-unit decomposition (e.g., `"gilbert" reduces to "ampere"`) so dimensional mismatches are obvious.
+
 ## v0.6.0 (2026-04-14)
 
 ### Enhancements

mix.exs

@@ -1,7 +1,7 @@
 defmodule Unity.MixProject do
   use Mix.Project
 
-  @version "0.6.0"
+  @version "0.7.0"
   @source_url "https://github.com/elixir-localize/unity"
 
   def project do