add CHANGES.md

Author: ssg

CHANGES.md

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+# Changes
+
+## 3.0.0
+
+### New features
+
+- Now works without std (`no_std`-enabled), so feel free to use this in your favorite microcontroller :)
+
+### Breaking changes
+
+- Due to `no_std`, `Error` trait isn't supported by `TurkishIdError` anymore
+
+## 2.0.0
+
+### Breaking changes
+
+- Implements `TryFrom` instead of `From`
+
+### Improvements
+
+- Faster validation
+
+## 1.0.0
+
+First stable release