docs: add changelog entries for deriveEq feature

Unisay · Unisay · commit 7557d1817737 · 2026-02-09T13:21:22.000+01:00
Add entries to plutus-tx and plutus-ledger-api changelogs documenting
the new deriveEq function and the migration from manual Eq instances.
diff --git a/plutus-ledger-api/changelog.d/20260205_174310_yuriy.lazaryev_derive_eq.md b/plutus-ledger-api/changelog.d/20260205_174310_yuriy.lazaryev_derive_eq.md
@@ -0,0 +1,4 @@
+### Changed
+
+- Replace hand-written `PlutusTx.Eq` instances with `deriveEq` across all V1/V2/V3 types
+- Add `PlutusTx.Eq` instance for `MintValue`
diff --git a/plutus-tx/changelog.d/20260205_174227_yuriy.lazaryev_derive_eq.md b/plutus-tx/changelog.d/20260205_174227_yuriy.lazaryev_derive_eq.md
@@ -0,0 +1,4 @@
+### Added
+
+- `PlutusTx.deriveEq`: Template Haskell function to derive `PlutusTx.Eq` instances
+  for datatypes and newtypes, similar to Haskell's `deriving stock Eq`
