neo-go/CHANGELOG.md

Changelog

This document outlines major changes between releases.

0.50.0 "Consolidation" (19 Sep 2019)

The first release from the new team focuses on bringing all related development effort into one codebase, refactoring things, fixing some long-standing bugs and adding new functionality. This release merges two radically different development branches --- dev and master that were present in the project (along with all associated pull requests) and also brings in changes made to the compiler in the neo-storm project.

New features:

• configurable storage backends supporting LevelDB, in-memory DB (for testing) and Redis
• BoltDB support for storage backend
• updated and extended interop APIs (thanks to neo-storm)

Notable behavior changes:

• the default configuration for privnet was changed to use ports 20331 and 20332 so that it doesn't clash with the default dockerized neo-privnet setups
• the default configuration path was changed from ../config to ./config, at this stage it makes life a bit easier for development, later this will be changed to some sane default for production version
• VM CLI now supports type inference for run parameters (you don't need to specify types explicitly in most of the cases) and treats operation parameter as mandatory if anything is passed to run

VM improvements:

• added implementation for EQUAL, NZ, PICK, TUCK, XDROP, INVERT, CAT, SUBSTR, LEFT, RIGHT, UNPACK, REVERSE, REMOVE
• expanded tests
• better error messages for different erroneous code
• implemented item conversions following neo-vm behavior: array to/from struct, bigint to/from boolean, anything to bytearray and anything to boolean
• improved compatibility with neo-vm (#394)

Technical improvements:

• switched to Go 1.12+
• gofmt, golint (#213)
• fixed and improved CircleCI builds
• removed internal rfc6969 package (#285)
• refactored util/crypto/io packages, removed a lot of duplicating code
• updated READMEs and user-level documents
• update Makefile with useful targets
• dropped internal base58 implementation (#355)
• updated default seed lists for mainnet and testnet from neo-cli

Bugs fixed:

• a lot of compiler fixes from neo-storm
• data access race in memory-backed storage backend (#313)
• wrong comparison opcode emitted by compiler (#294)
• decoding error in publish transactions (#179)
• decoding error in invocation transactions (#173)
• panic in state transaction decoding
• double VM run from CLI (#96)
• non-constant time crypto (#245)
• APPEND pushed value on the stack and worked for bytearrays (#391)
• reading overlapping hash blocks from the DB leading to blockchain state neo-go couldn't recover from (#393)
• codegen for append() wasn't type-aware and emitted wrong code (#395)
• node wasn't trying to reconnect to other node if connection failed (#390)
• stricly follow handshare procedure (#396)
• leaked connections if disconnect happened before handshake completed (#396)

Inherited unreleased changes

Some changes were also done before transition to the new team, highlights are:

• improved RPC testing
• implemented getaccountstate, validateaddress, getrawtransaction and sendrawtransaction RPC methods in server
• fixed getaccountstate RPC implementation
• implemented graceful blockchain shutdown with proper DB closing

0.45.14 (not really released, 05 Dec 2018)

This one can technically be found in the git history and attributed to commit fa1da2cb91, but it has no tag in the repository and so can't count as a properly released thing. Still it can be marked as a point in history with the following changes relative to 0.44.10:

• switched to Go modules for dependency management
• various optimizations for basic structures like Uin160/Uint256/Fixed8
• improved testing
• added support for invoke method in RPC client
• implemented getassetstate in RPC server
• fixed NEP2Encrypt and added tests
• added NewPrivateKeyFromRawBytes function to the wallet package

0.44.10 (27 Sep 2018)

This is the last one tagged in the repository, so it's considered as the last one properly released before 0.50+. Releases up to 0.44.10 seem to be made in automated fashion and you can find their changes on GitHub.