List of introduced changes extended (#5)

README.md

@@ -3,9 +3,12 @@
 This is a rewrite of the official beacon chain deposit contract. [Eth 2.0 deposit contract](https://github.com/ethereum/eth2.0-specs/blob/dev/solidity_deposit_contract/deposit_contract.sol).
 
 The following things were changed:
+* Upgraded to Solidity 0.8.7
 * Deposit is made via ERC20 tokens instead of native ETH
+* Deposits can be done in batches
 * Contract can be made upgradeable
 * Contract can be made claimable (allowing to claim mistakenly sent third-party tokens back)
+* Contract can be made pausable
 
 ## Compiling solidity deposit contract