changelog

CHANGELOG.md

@@ -5,7 +5,32 @@ There are several crates in this repo, this changelog will keep track of all of
 Check [Keep a Changelog](http://keepachangelog.com/) for recommendations on how to structure this file.
 
 ## [elrond-wasm 0.19.0, elrond-codec 0.6.0, mandos 0.9.0] - 2021-09-10
-- Managed APIs used everywhere
+- Managed types used extensively. Because of this, the recommended Arwen minimum version is `v1.4.10`.
+	- Redesigned parts of the elrond-codec, so as to allow custom type specializations. These specializations allow serializers and types to bypass the limitations of the codec traits to provide optimized implementations. Managed type serialization relies on this.
+	- Redesigned existing managed types: `BigInt`, `BigUint`, `EllipticCurve`.
+	- Added the `ManagedBuffer` type, which can be used to store anything on the VM side.
+	- Support for complex operations using managed buffers, such as storing lists of elements in a managed buffer via the `ManagedVec` type.
+	- There are `ManagedAddress`es now. They rely on another managed type, the `ManagedByteArray`, which is a fixed size managed structure.
+	- `TokenIdentifier` is now a managed type.
+	- Serializer based on a managed buffer.
+	- Storage keys are now based on managed buffers.
+	- All error messages generated by the framework are assembled using a managed buffer.
+	- The blockchain API uses managed types for most interactions.
+	- The contract call API uses managed types for most interactions.
+	- The call value API supports multi transfer via managed `EsdtTokenPayment` objects.
+	- Event logs are sent to the VM via managed types (`ManagedVec<ManagedBuffer>` for topics, `ManagedBuffer` for data).
+	- Type conversion traits for managed types: `ManagedFrom` and `ManagedInto`.
+	- There are now 2 types of `SCError`: `StaticSCError` for static messages and `ManagedSCError`, which is backed by a managed buffer.
+	- Contract errors can now be triggered immediately, without the need to return them from an endpoint.
+- Improved macro preprocessor: more complex patterns can now be substituted.
+	- Generic API parameter needs not be specified every time.
+	- Substitutions available for most managed types and storage mappers.
+- Separated contract API into low-level VM API connectors and high-level utility objects to be used in the contracts.
+- Mandos-rs improvements:
+	- Self tests synchronized with mandos-go. Some missing features needed to be added to make them pass.
+	- Support for ESDT tokens.
+	- Support for ESDT multi-transfer.
+
 
 ## [elrond-wasm 0.18.2] - 2021-08-20
 - Crypto API: `ripemd160` function, custom secp256k1 signature verification (`verify_custom_secp256k1`) and signature generation (`encode_secp256k1_der_signature`).