fix: silence warnings and fix _transfer in CompliantERC20

examples/Governor/Timelock.sol

@@ -52,7 +52,7 @@ contract Timelock {
         delay = delay_;
     }
 
-    fallback() external payable {}
+    receive() external payable {}
 
     function setDelay(uint delay_) public {
         require(msg.sender == address(this), "Timelock::setDelay: Call must come from Timelock.");

examples/Identity/CompliantERC20.sol

@@ -53,13 +53,13 @@ contract CompliantERC20 is EncryptedERC20 {
 
     // Transfers an encrypted amount.
     function _transfer(address from, address to, euint64 _amount, ebool isTransferable) internal override {
-        // Condition 1: hasEnoughFunds
-        ebool enoughFund = TFHE.le(_amount, balances[from]);
-        euint64 amount = TFHE.cmux(enoughFund, _amount, TFHE.asEuint64(0));
+        // Condition 1: hasEnoughFunds and hasEnoughAllowance (classical ERC20)
+        euint64 amount = TFHE.cmux(isTransferable, _amount, TFHE.asEuint64(0));
 
         amount = rulesContract.transfer(from, to, amount);
 
         balances[to] = balances[to] + amount;
         balances[from] = balances[from] - amount;
+        emit Transfer(from, to);
     }
 }