0.5.3 incompatible but better asymmetric keys id (both encryption and signing)

README.md

@@ -6,6 +6,12 @@ Cryptographic API works exactly the same and compiles to any platform supported
 
 All primitives meant to send over the network or store are `kotlinx.serialization` compatible, serializers included.
 
+# Important notes on upgrade
+
+Since version __0.5.*__ key identity calculation for asymmetric keys is updated
+to make it more safe for theoretic future attack on blake2b hashing. Key.id values
+are incompatible with older. Sorry for inconvenience.
+
 # Usage
 
 ```kotlin