Updating UniswapV2

• using solidity 0.8.25
• using IERC20 + solady ERC20
• changing reentrancy guard to OpenZeppelin's
• replace Uniswap fixed point numbers with custom data types
• remove safeMath, not needed with 0.8+
• replacing square rot function (beware of rounding)
• change adequate storage variables to Immutable
• replacing require with custom errors
• adding unchecked in price oracles (expected to overflow)

Important concepts :

• TWAP:

• AMM:

• constant:

• impermanent loss:

• fixed poin numbers & rounding (in favour of the contract):