v2.0.0-alpha

Changelog:

BondHelpers

• Added computeRedeemableTrancheAmounts, a method which calculates the tranche proportional amounts that can be redeemed before maturity

BondIssuer.sol

• Updated internal book keeping, to keep track of active bonds.
• Added a public poke function called matureActive, which invokes mature on the active bond when its up for maturity

BasicFeeStrategy.sol

• Added a new configuration parameter which has to be set by the owner to allow debasement
• Updated rollover fee math to allow for debasement only when the parameter is set

PerpetualTranche.sol

• Added an authorized whitelist to perp. Rollovers can only be invoked by whitelisted addresses. If no address is whitelisted, it's publicly callable. Only owner can update the whitelist.
• Added helper methods to view and update the whitelist.
• Added a external helper method getReserveTrancheValue to calculate a given tranche's reserve value.
• Updated all multiplication and division operations to use openzeppelin's mulDiv
• Some minor function renaming and comment updates

RolloverVault.sol

• Create a new on-chain vault, where users deposit a collateral asset (like AMPL) to mint shares
• The asset is used to perform rollovers on PerpetualTranche
• On redemption of shares, users get their share of the vault's assets