CHANGELOG: release 0.91.0

CHANGELOG.md

@@ -2,6 +2,169 @@
 
 This document outlines major changes between releases.
 
+## 0.91.0 "Ululation" (18 August 2020)
+
+We've updated NeoGo for 3.0.0-preview3 compatibility implementing all the
+appropriate protocol changes as well as improving NeoGo-specific
+components. This release brings with it significant changes for smart
+contracts, both in terms of Neo protocol changes (no more there is a single
+entry point! execution environment has also changed in lots of ways) and Go
+smart contract compiler updates and fixes.
+
+Please note that this release is incompatible with 0.90.0 and there will be no
+long-term support provided for it, Neo 3 is still changing and
+improving. If you have any wallets used with 0.90.0 release you'll need to
+regenerate them from private keys because of changes to verification scripts
+that also changed hashes and addresses.
+
+But nonetheless it is tested to be compatible with preview3 testnet for up to
+68K of blocks in terms of storage changes, with neo-debugger for debug data
+produced by the compiler and with consensus process for heterogeneous setups
+(like 2 neo-go CNs with 2 C# CNs).
+
+New features:
+ * secp256k1 signature checks added to interop functions
+   (Neo.Crypto.VerifyWithECDsaSecp256k1 and
+   Neo.Crypto.CheckMultisigWithECDsaSecp256k1 syscalls,
+   crypto.ECDsaSecp256k1Verify and crypto.ECDSASecp256k1CheckMultisig interop
+   functions, #918)
+ * RIPEMD160 hash added to interop functions (Neo.Crypto.RIPEMD160 syscall,
+   crypto.RIPEMD160 interop function, #918, #1193)
+ * "NotFound" P2P message (#1135, #1333)
+ * base64 encoding/decoding interop functions (binary.Base64Encode and
+   binary.Base64Decode, #1187)
+ * new contract.GetCallFlags interop (System.Contract.GetCallFlags syscall)
+   implemented (#1187)
+ * it is possible now to create iterators and enumerators over primitive VM
+   types in smart contracts (#1218)
+ * runtime.Platform interop (System.Runtime.Platform syscall) is now available
+   to smart contracts in Go (#1218)
+ * storage.PutEx interop (System.Storage.PutEx syscall) is now available to
+   smart contracts in Go (#1221)
+ * exceptions support in VM (#885)
+ * CLI conversion utility functions for addresses/hashes/etc (#1207, #1258)
+ * multitransfer transactions now can be generated with RPC client or CLI
+   (#940, #1260)
+ * System.Callback.* syscalls for callback creation and execution (callback.*
+   interop functions, #1197)
+ * MPT implementation was added (#1235)
+ * Policy native contract now also contains MaxBlockSystemFee setting (#1195)
+ * getting blocks by indexes via P2P is now supported (#1192)
+ * limited pointer support was added to the compiler (#1247)
+ * voting support in CLI (#1206, #1286)
+
+Behavior changes:
+ * crypto.ECDsaVerify interop function was renamed to
+   crypto.ECDsaSecp256r1Verify now that we have support for secp256k1 curve
+   (#918)
+ * many RPC requests/responses changed names used for data fields (#1169)
+ * runtime.Notify interop function now requires a mandatory UTF8 name
+   parameter (#1052) and this name can be used to filter notifications (#1266)
+ * sendrawtransaction and submitblock RPC calls now return a hash instead of
+   boolean value in case of success (#1216)
+ * System.Runtime.Log syscall now only accepts valid UTF8 strings no longer
+   than 1024 bytes (#1218)
+ * System.Storage.Put syscall now limits keys to 64 bytes and values to 1024
+   bytes (#1221)
+ * PUSHA instruction now works with relative code offset (#1226)
+ * EQUAL instruction no longer does type conversions, so that values of
+   different types are always unequal (#1225)
+ * verification scripts now can't use more than 0.5 GAS (#1202)
+ * contracts no longer have single entry point, rather they export a set of
+   methods with specific offsets. Go smart contract compiler has been changed
+   accordingly to add all exported (as in Go) methods to the manifest
+   (but with the first letter being lowercased to match NEP-5 expections,
+   #1228). Please also refer to examples changes to better see how it affects
+   contracts, manifests and configuration files (#1296)
+ * native contracts are now called via Neo.Native.Call syscall (#1191)
+ * compressed P2P payloads now also contain their uncompressed size (#1212,
+   #1255)
+ * NEF files now use double SHA256 for checksums (#1203)
+ * VM's map keys and contract methods now can only contain valid UTF-8 strings
+   (#1198)
+ * stack items now can be converted to/from JSON natively (without
+   smartcontract.ContractParameters intermediate) which is now used for
+   invoke* RPC calls and application execution logs (#1242, #1317)
+ * invoking Policy native contracts now requires AllowsStates (to get
+   settings) or AllowModifyStates (to change setting) flags (#1254)
+ * Transaction now has Signers field unifying Sender (the first Signer) and
+   Cosigners, a Signer can have FeeOnly or any other regular witness scope
+   (#1184)
+ * verification scripts no longer have access to blockchain's state (#1277)
+ * governance scheme was changed to delegated committee-based one. The number
+   of validators is now specified with ValidatorsCount configuration option,
+   standby validators are no longer being registered by default (#867, #1300)
+ * Go 1.13+ is now required to build neo-go (#1281)
+ * public contract methods now always return some value and this is being
+   checked by the VM (#1196, #1331, #1332)
+ * runtime interop package now exports triggers as proper constants rather
+   than functions (#1299)
+ * RPC client no longer has SetWIF/WIF methods that didn't do anything useful
+   anyway (#1328)
+
+Improvements:
+ * Neo.Crypto.CheckMultisigWithECDsaSecp256r1 syscall is now available via
+   crypto.ECDSASecp256r1CheckMultisig interop function (#1175)
+ * System.Contract.IsStandard syscall now also checks script's container (#1187)
+ * syscalls no longer have allowed triggers limitations (#1205)
+ * better testing coverage (#1232, #1318, #1328)
+ * getrawmempool RPC call now also supports verbose parameter (#1182)
+ * VMState is no longer being stored as a string for application execution
+   results (#1236)
+ * manifest now contains a list of supported standards (#1204)
+ * notifications can't be changed now by a contract after emitting them
+   (#1199)
+ * it is possible to call other contracts from native contracts now (#1271)
+ * getnep5transfers now supports timing parameters (#1289)
+ * smartcontract package now has CreateDefaultMultiSigRedeemScript that should
+   be used for BFT-compliant "m out of n" multisignature script generation
+   (#1300)
+ * validators are always sorted now (standby validators were not previously,
+   #1300)
+ * debug information now contains all file names (#1295)
+ * compiler now accepts directory to compile a package, only one file could be
+   passed previously (#1295)
+ * some old no longer used functions and structures were removed (#1303)
+ * contract inspection output was improved for new Neo 3 VM instructions (#1231)
+ * ping P2P message handling was changed to trigger block requests (#1326)
+
+Bugs fixed:
+ * inability to transfer NEO/GAS from deployed contract's address (#1180)
+ * System.Blockchain.GetTransactionFromBlock syscall didn't pick all of its
+   arguments from the stack in some error cases (#1187)
+ * System.Contract.CallEx syscall didn't properly check call flags (#1187)
+ * System.Blockchain.GetContract and System.Contract.Create syscalls returned
+   an interop interface instead of plain well-defined structure (#1187)
+ * System.Contract.Update syscall's manifest checks were improved, return
+   value was fixed (#1187)
+ * getnep5balances and getnep5transfers RPC calls now support addresses in
+   their parameters (#1188)
+ * rare panic during node's shutdown (#1188)
+ * System.Runtime.CheckWitness, System.Runtime.GetTime syscalls are only allowed to be called with
+   AllowStates flag (#1218)
+ * System.Runtime.GasLeft syscall result for test VM mode was wrong (#1218)
+ * getrawtransaction RPC call now also returns its VM state after execution
+   (#1183)
+ * getnep5balances and getnep5transfers RPC calls now correctly work for
+   migrated contracts (#1188, #1239)
+ * compiler now generates correct code for global variables from multiple
+   files (#1240)
+ * compiler now correctly supports exported contracts and variables in
+   packages (#1154)
+ * compiler no longer confuses functions with the same name from different
+   packages (#1150)
+ * MaxBlockSize policy setting was not enforced (#1254)
+ * missing scope check for signers (#1244)
+ * compiler now properly supports init() functions (#1253, #1295)
+ * getvalidators RPC call now returns zero-length array of validators when
+   there are no registered candidates instead of null value (#1300)
+ * events were not added to the debug data (#1311, #1315)
+ * RPC client's BalanceOf method was lacking account parameter (#1323)
+ * VM CLI debugging commands didn't really allow to step through the contract
+   (#1328)
+ * recovery message decoding created incorrect PrepareRequest payload that
+   lead to consensus failures (#1334)
+
 ## 0.90.0 "Tantalization" (14 July 2020)
 
 The first Neo 3 compatible release of neo-go! We've targeted to make it

ROADMAP.md

@@ -7,8 +7,8 @@ functionality.
 ## Versions 0.7X.Y (as needed)
 * Neo 2.0 support (bug fixes, minor functionality additions)
 
-## Version 0.91.0 (August 2020)
-* Neo 3.0-preview3 compatible version.
+## Version 0.92.0 (TBD, aligned with preview4 release)
+* Neo 3.0.0-preview4 compatible version.
 
 ## Version 1.0 (2020, aligned with NEO 3.0 release)
 * full NEO 3.0 support