CHANGELOG.md in measured-2.5.2 vs CHANGELOG.md in measured-2.6.0

@@ -1,4 +1,11 @@
+2.6.0
+-----
+
+* Add `Measured::MissingConversionPath` and `Measured::UnitAlreadyAdded` as subclasses of `Measured::UnitError` to handle specific error cases. (@arturopie)
+* Support only ActiveSupport 5.2 and above.
+
+
 2.5.2
 -----
 
 * Allow unit values to be declared in the unit system through aliases and not just the base unit name.
 * Fix some deprecations in tests and CI.