changelog: finalize 9.3.0
# Changelog
-## 9.3.0 [version may change, pending release]
+## 9.3.0 [tagged 2020-11-23]
- Enter multisig account name on the device if the name in BTCRegisterScriptConfigRequest is empty.
- Allow new keypaths: m/48'/coin'/account' for multisig, to enable compatibility with the Nunchuk wallet.
- Multisig script type and derivation keypath are now also verified during account regisration.
