update CHANGELOG and ROADMAP, release 0.72.0

CHANGELOG.md

@@ -2,6 +2,111 @@
 
 This document outlines major changes between releases.
 
+## 0.72.0 "Crystallization" (06 Feb 2020)
+
+Starting at the end of the year 2019 we've spent a lot of effort to
+stress-test our node with transaction load and this allowed us to uncover
+some problems in various parts of the system. This release addresses all of
+them and brings with it updated networking, consensus and mempool components
+that can handle quite substantial transaction traffic and successfully produce
+new blocks while being stressed. There are also important updates in VM that
+fix incompatibilities with C# node and interesting improvements in compiler
+based on our experience porting neofs smart contract to Go.
+
+New features:
+ * `dump` command for wallet to dump it (replaced non-functional `open`
+   command, #589)
+ * support for single-node consensus setup (#595)
+ * ping/pong P2P messages are now supported with PingInterval and PingTimeout
+   configuration options (#430, #610, #627, #639)
+ * VM now fully supports calculating GAS spent during execution (#424, #648)
+ * Fixed8 type now supports YAML marshalling (#609)
+ * RPC invoke* calls can now be GAS-limited with MaxGasInvoke configuration
+   option (#609)
+ * gas limit for free invocation transactions can now be configured with
+   FreeGasLimit option which default to 10.0 for mainnet and testnet (#609)
+ * new compiler interop VerifySignature to verify ECDSA signatures (#617)
+ * compiler now supports loops with single condition (no init/post, #618)
+ * memory pool size is now configurable with MemPoolSize option which defaults
+   to 50000 for all configurations (#614)
+ * support for variables in slice literals in the compiler (#619)
+ * support for map literals in the compiler (#620)
+ * AppCall interop function (#621)
+ * `string` to `[]byte` conversion was implemented in the compiler (#622)
+ * Docker images now contain a dump of 1600 blocks for single-node setups and
+   one can choose which dump to use for restore with ACC environment variable
+   (#625)
+ * switch statement support in the compiler (#626)
+ * panic support in the compiler (#629)
+
+Behaviour changes:
+ * NEP2Decrypt function in keys package now returns a pointer to PrivateKey
+   rather than a WIF-encoded string (#589)
+ * DecryptAccount function in wallet package was moved to Decrypt method of
+   Account (#589)
+ * logging was moved from logrus to zap which changed messages format a little
+   (#284, #598)
+ * Block, BlockBase and Header structures were moved into their own `block`
+   package (#597)
+ * MemPool was moved into its own `mempool` package (#597)
+ * Sign method of PrivateKey no longer returns an error (#604)
+ * wallet is now compatible with C# node wallets (#603)
+ * consensus service now gets its keys from the wallet file instead of
+   plain-text WIF in the configuration (#588)
+ * `image` Makefile target was updated to nspccdev repo (#625)
+ * serializing invalid Transaction structures (that have no Data) is now
+   forbidden (#640)
+ * Item is no longer exposed by the mempool package (#647)
+
+Improvements:
+ * better testing of keys, wallet, compiler and mempool packages (#589, #568,
+   #647)
+ * smart use of previous proposal for block generation after dBFT's ChangeView
+   (#591)
+ * peer-server interaction refactored (#606)
+ * peer message queues were introduced with different priorities reducing
+   delays in consensus messages delivery and improving unicast communication
+   (#590, #615, #639)
+ * more efficient code generated by the compiler in some cases (#626, #629,
+   #637)
+ * mempool redesign leading to better performance (#647), it also doesn't
+   store unverified transactions now
+
+Bugs fixed:
+ * consensus service was not really requesting transactions from peers when it
+   was missing some locally (#602)
+ * build failing with newer rfc6979 package (#592)
+ * wrong integer serialization/deserialization in VM leading to
+   inconsistencies in state with C# node (#501/#605)
+ * consensus service was not processing node election results to
+   enable/disable dBFT (#603)
+ * in some cases peers were not unregistered after disconnect (#606)
+ * different execution results with C# node because of missing invocation fee
+   calculations (#607)
+ * RPC server now properly returns the amount of gas spent during execution
+   for invoke* calls (#609)
+ * FromAddress interop was translated improperly by the compiler (#621)
+ * compiler emitting wrong integers (#624)
+ * EOF errors on recovery consensus messages decoding (#632)
+ * wrong handling of assignments to underscore variable in the compiler (#631)
+ * wrong answers to getunspents/getaccountstate RPC requests for unknown
+   addresses (#633)
+ * multiple dBFT issues leading to consensus stalls, attempts to add wrong
+   block to the chain, message processing using wrong height and other
+   problems (#635, #641)
+ * duplicate connections were not detected before the handshake completion
+   which can happen too late (#639)
+ * attempts to connect to peer that has already connected to node (#639)
+ * unregistration of connected addresses (#639)
+ * ArrayReverse function was not copying arrays of size 1 (#644)
+ * race in transaction verification/addition to the mempool leading to
+   potential double spends (#647)
+ * wrong concurrent attempts to add new block to the chain (#647)
+ * blocks were not relayed properly by non-consensus nodes (#647)
+ * mempool memory leak (#647)
+ * missing reverification after block acceptance for transactions in mempool
+   (#647)
+
 ## 0.71.0 "Celebration" (30 Dec 2019)
 
 Version 0.71.0 ends the year 2019 of neo-go development with a solid release

ROADMAP.md

@@ -4,10 +4,11 @@ This defines approximate plan of neo-go releases and key features planned for
 them. Things can change if there a need to push a bugfix or some critical
 functionality.
 
-## Version 0.72.0 (end of January 2019)
+## Versions 0.7X.Y (as needed)
-* wallet CLI functionality
+* Neo 2.0 support (bug fixes, minor functionality additions)
-* completing P2P protocol implementation
+
-* fix remaining inconsistencies in mainnet transaction processing wrt C# implementation
+## Version 0.90.0 (April 2020)
+* Neo 3.0 features preview
 
 ## Version 1.0 (2020, aligned with NEO 3.0 release)
 * full NEO 3.0 support