Highlights

This release features the 1.0 version of AVM, extending Algorand's smart contract capabilities for even greater composability. Highlights in this release include:

• Application transactions: the ability for smart contracts to execute transactions on directly on chain.
• App cost pooling: larger contract size, by combining the budgets across an application group.
• Increased account smart contract limit to 50
• More smart contract opcodes to improve composability (inner transaction references, verify ECDSA, log, and others)
• Debugging for itxn programs and include a bugfix for dryrun crashes.

Changes

1. AVM
   • Added
     • Add GroupID as an accessible global field in AVM (#2838)
     • Add opcodes for dynamically indexing into Txn array fields (#2847)
     • Implement verify ECDSA secp256k1 opcodes (#2852)
     • Introduce itxn to get inner transaction results (#2883)
     • Smart contracts can issue transactions (#2661)
     • loads and stores opcodes that take scratch slot from stack (#2853)
   • Changed
     • Better naming for extract opcodes (#2891)
     • Check if tx_field can be set with tables instead of switch (#2849)
     • Dry run should return opcode cost used (#2746)
     • Ensure that AssetCreator is not used before proto.LogicSigVersion=5 and unify field handling (#2784)
     • Expose nonparticipation txn field in teal (#2823)
     • Increase max app opt ins to 50 (#2750)
     • Make config.MaxLogCalls dependent on some consensus param (#2732)
     • Use math.bits intrinsics to simplify addw/mulw opcodes (#2839)
   • Fixed
     • Ensure disassemble/reassemble cycle works in testProg (#2745)
     • Increase coverage in AVM code and bug fix in account fields of tx_field (#2840)
2. Goal

   • Changed

     • Display app address in goal app info & show logs are binary in REST API (#2836)
     • Display extra pages in goal info commands (#2763)

   • Fixed

     • Fix enumeration bug with using Ledger Nano S and goal (#2822)
3. TEAL
   • Added
     • Enable debugging itxn programs (#2900)
   • Fixed
     • Fix dryrun crash on rewards calculation (#2894)
4. Ledger
   • Added
     • Add ledger.GetBlockAddresses() (#2872)
   • Changed
     • Fix overriding consensus parameters in evaluator. (#2811)
     • Simplify startEvaluator() (#2812)
5. Network
   • Fixed
     • Fix ParseHostOrURL and enable expect tests (#2772)
6. Tools
   • Changed
     • Improve error message in update.sh when updater is corrupt (#2766)
     • Netgoal - add account balance range (#2771)
7. Other
   • Changed
     • Add comments for protocol hash IDs and tags (#2774)
     • Checking CircleCI tests run once and only once (#2749)
     • Fix go vet issues (#2826)
     • Limit the number of buckets in verifiedTransactionCache to 3 (#2775)
     • Remove codegen from travis file (#2768)

Additional Resources

• Algorand Forum
• Developer Documentation