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CHANGELOG.md

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Changelog

1.0.0

(This release is the one from the canonical lauch onstage in Bogota. We were missing semantic versioning at the time, but we call this the 1.0.0 release retroactively.)

Deploy commit eda322894a5ed379bbda2b399c9d1cc65aa8c132

1.1.0

  • Introduce semantic versioning to the Deployer and RToken
  • RTokenCreated event: added version argument
event RTokenCreated(
        IMain indexed main,
        IRToken indexed rToken,
        IStRSR stRSR,
        address indexed owner
    );

=>

event RTokenCreated(
        IMain indexed main,
        IRToken indexed rToken,
        IStRSR stRSR,
        address indexed owner,
        string version
    );
  • Add version() getter on Deployer, Main, and all Components, via mix-in. To be updated with each subsequent release.

Deploy commit d757d3a5a6097ae42c71fc03a7c787ec001d2efc

2.0.0

Candidate release for the "all clear" milestone. There wasn't any real usage of the 1.0.0/1.1.0 releases; this is the first release that we are going to spend real effort to remain backwards compatible with.

  • Bump solidity version to 0.8.17
  • Support multiple beneficiaries via the FacadeWrite
  • Add RToken.issueTo(address recipient, uint256 amount, ..) and RToken.redeemTo(address recipient, uint256 amount, ..) to support issuance/redemption to a different address than msg.sender
  • Add RToken.redeem*(.., uint256 basketNonce) to enable msg sender to control expectations around partial redemptions
  • Add RToken.issuanceAvailable() + RToken.redemptionAvailable()
  • Add FacadeRead.primeBasket() + FacadeRead.backupConfig() views
  • Many external libs moved to internal
  • Switch from price point estimates to price ranges; all prices now have a low and high. Impacted interface functions:
    • IAsset.price()
    • IBasketHandler.price()
  • Replace IAsset.fallbackPrice() with IAsset.lotPrice(). The lot price is the current price when available, and a fallback price otherwise.
  • Introduce decaying fallback prices. Over a finite period of time the fallback price goes to zero, linearly.
  • Remove IAsset.pricePerTarget() from asset interface
  • Remove rewards earning and sweeping from RToken
  • Add safeMulDivCeil() to ITrading traders. Use when overflow is possible from 2 locations:
  • Introduce config struct to encapsulate Collateral constructor params more neatly
  • In general it should be easier to write Collateral plugins. Implementors should only ever have to override 4 functions: tryPrice(), refPerTok(), targetPerRef(), and claimRewards().
  • Add .div(1 - maxTradeSlippage) to calculation of shortfallSlippage in RecollateralizationLib.sol:L188.
  • FacadeRead:
    • remove .pendingIssuances() + .endIdForVest()
    • refactor calculations in basketBreakdown()
  • Bugfix: Fix claim rewards from traders in FacadeAct
  • Bugfix: Do not handout RSR rewards when no one is staked
  • Bugfix: Support small redemptions even when the RToken supply is massive
  • Bump component-wide version() getter to 2.0.0
  • Remove non-atomic issuance
  • Replace redemption battery with issuance and redemption throttles
    • amtRate valid range: [1e18, 1e48]
    • pctRate valid range: [0, 1e18]
  • Fix Furnace/StRSR reward period to 12 seconds
  • Gov params:
    • --rewardPeriod
    • --issuanceRate
    • ++issuanceThrottle
    • ++redemptionThrottle
  • Events:
    • --RToken.IssuanceStarted
    • --RToken.IssuancesCompleted
    • --RToken.IssuancesCanceled
    • Issuance( address indexed recipient, uint256 indexed amount, uint192 baskets ) -> Issuance( address indexed issuer, address indexed recipient, uint256 indexed amount, uint192 baskets )
    • Redemption(address indexed recipient, uint256 indexed amount, uint192 baskets ) -> Redemption(address indexed redeemer, address indexed recipient, uint256 indexed amount, uint192 baskets )
    • ++RToken.IssuanceThrottleSet
    • ++RToken.RedemptionThrottleSet
  • Allow redemption while DISABLED
  • Allow grantRTokenAllowances() while paused
  • Add RToken.monetizeDonations() escape hatch for accidentally donated tokens
  • Collateral default threshold: 5% -> 1% (+ include oracleError)
  • RecollateralizationLib: Tighter basket range during recollateralization. Will now do minTradeVolume-size auctions to fill in dust rather than haircut.
  • Remove StRSR.setName()/setSymbol()
  • Prevent RToken exchange rate manipulation at low supply
  • Prevent StRSR exchange rate manipulation at low supply
  • Forward RSR directly to StRSR, bypassing RSRTrader
  • Accumulate melting on Furnace.setRatio()
  • Payout RSR rewards on StRSR.setRatio()
  • Distinguish oracle timeouts when dealing with multiple oracles in one plugin
  • Add safety during asset degregistration to ensure it is always possible to unregister an infinite-looping asset
  • Fix StRSR/RToken EIP712 typehash to use release version instead of "1"
  • Add FacadeRead.redeem(IRToken rToken, uint256 amount, uint48 basketNonce) to return the expected redemption quantities on the basketNonce, or revert
  • Integrate with OZ 4.7.3 Governance (changes to quorum()/tproposalThreshold())