v2.1.0

Added

• Solidity v0.8.4 custom errors.

Changed

• Define the upper limit as MAX_UD60x18 / SCALE in the sqrt function.
• Define xValue var to avoid reading x.value multiple times.
• Move SCALE > prod1 check at the top of the mulDivFixedPoint function.
• Refer to add function operands as summands.
• Refer to sub function operands as minuend and subtrahend.
• Rename rUnsigned var to rAbs.
• Set minimum compiler version to 0.8.4.
• Use MIN_SD59x18 instead of type(int256).min where appropriate.

Removed

• hardhat/console.sol import.
• Stale caveat in sqrt function NatSpec.