💫 Rename contracts in contracts-por package (#1206)

* Fix a comment

* Rename IPoRToken -> IProofOfReserveToken

* Rename TrueCurrencyWithPoR -> TrueCurrencyWithProofOfReserve

* Rename TrueUSDWithPoR -> TrueUSD

* Fix comments

Author: Michał Sieczkowski

packages/contracts-por/contracts/TokenControllerV3.sol

@@ -6,7 +6,7 @@ import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
 import {IRegistry} from "./interface/IRegistry.sol";
 import {IOwnedUpgradeabilityProxy} from "./interface/IOwnedUpgradeabilityProxy.sol";
 import {ITrueCurrency} from "./interface/ITrueCurrency.sol";
-import {IPoRToken} from "./interface/IPoRToken.sol";
+import {IProofOfReserveToken} from "./interface/IProofOfReserveToken.sol";
 
 /**
  * @dev Contract that can be called with a gas refund
@@ -640,27 +640,27 @@ contract TokenControllerV3 {
      * Set new chainReserveFeed address
      */
     function setChainReserveFeed(address newFeed) external onlyOwner {
-        IPoRToken(address(token)).setChainReserveFeed(newFeed);
+        IProofOfReserveToken(address(token)).setChainReserveFeed(newFeed);
     }
 
     /**
      * Set new chainReserveHeartbeat
      */
     function setChainReserveHeartbeat(uint256 newHeartbeat) external onlyProofOfReserveEnablerOrOwner {
-        IPoRToken(address(token)).setChainReserveHeartbeat(newHeartbeat);
+        IProofOfReserveToken(address(token)).setChainReserveHeartbeat(newHeartbeat);
     }
 
     /**
      * Disable Proof of Reserve check
      */
     function disableProofOfReserve() external onlyProofOfReserveEnablerOrOwner {
-        IPoRToken(address(token)).disableProofOfReserve();
+        IProofOfReserveToken(address(token)).disableProofOfReserve();
     }
 
     /**
      * Enable Proof of Reserve check
      */
     function enableProofOfReserve() external onlyProofOfReserveEnablerOrOwner {
-        IPoRToken(address(token)).enableProofOfReserve();
+        IProofOfReserveToken(address(token)).enableProofOfReserve();
     }
 }

packages/contracts-por/contracts/TrueCurrencyWithPoR.sol renamed to packages/contracts-por/contracts/TrueCurrencyWithProofOfReserve.sol

@@ -3,17 +3,17 @@ pragma solidity 0.6.10;
 
 import {TrueCurrency} from "./TrueCurrency.sol";
 import {AggregatorV3Interface} from "@chainlink/contracts/src/v0.6/interfaces/AggregatorV3Interface.sol";
-import {IPoRToken} from "./interface/IPoRToken.sol";
+import {IProofOfReserveToken} from "./interface/IProofOfReserveToken.sol";
 import {SafeMath} from "@openzeppelin/contracts/math/SafeMath.sol";
 
 /**
- * @title TrueCurrencyWithPoR
- * @dev TrueCurrencyPoR is an ERC20 with blacklist & redemption addresses.
+ * @title TrueCurrencyWithProofOfReserve
+ * @dev TrueCurrencyWithProofOfReserve is an ERC20 with blacklist & redemption addresses.
  *  Please see TrueCurrency for the implementation that this contract inherits from.
  *  This contract implements an additional check against a Proof-of-Reserves feed before
  *  allowing tokens to be minted.
  */
-abstract contract TrueCurrencyWithPoR is TrueCurrency, IPoRToken {
+abstract contract TrueCurrencyWithProofOfReserve is TrueCurrency, IProofOfReserveToken {
     using SafeMath for uint256;
 
     /**

packages/contracts-por/contracts/common/ProxyStorage.sol

@@ -56,7 +56,7 @@ contract ProxyStorage {
     mapping(address => bool) isBlacklisted;
     mapping(address => bool) public canBurn;
 
-    // PoR feed-related variables
+    // Proof of Reserve feed related variables
     uint256 public chainReserveHeartbeat;
     address public chainReserveFeed;
     bool public proofOfReserveEnabled;

packages/contracts-por/contracts/interface/IPoRToken.sol renamed to packages/contracts-por/contracts/interface/IProofOfReserveToken.sol

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: MIT
 pragma solidity 0.6.10;
 
-interface IPoRToken {
+interface IProofOfReserveToken {
     /*** Admin Functions ***/
 
     function setChainReserveFeed(address newFeed) external;

packages/contracts-por/contracts/tokens/TrueUSDWithPoR.sol renamed to packages/contracts-por/contracts/tokens/TrueUSD.sol

@@ -1,14 +1,14 @@
 // SPDX-License-Identifier: MIT
 pragma solidity 0.6.10;
 
-import {TrueCurrencyWithPoR} from "../TrueCurrencyWithPoR.sol";
+import {TrueCurrencyWithProofOfReserve} from "../TrueCurrencyWithProofOfReserve.sol";
 
 /**
  * @title TrueUSD
  * @dev This is the top-level ERC20 contract, but most of the interesting functionality is
  * inherited - see the documentation on the corresponding contracts.
  */
-contract TrueUSDWithPoR is TrueCurrencyWithPoR {
+contract TrueUSD is TrueCurrencyWithProofOfReserve {
     uint8 constant DECIMALS = 18;
     uint8 constant ROUNDING = 2;
 

packages/contracts-por/test/TrueCurrencyWithPoR.test.ts renamed to packages/contracts-por/test/TrueUSD.test.ts

@@ -7,8 +7,8 @@ import { timeTravel } from 'utils/timeTravel'
 import {
     MockV3Aggregator,
     MockV3Aggregator__factory,
-    TrueCurrencyWithPoR,
-    TrueUSDWithPoR__factory,
+    TrueUSD,
+    TrueUSD__factory,
 } from 'contracts'
 
 use(waffle.solidity)
@@ -22,15 +22,15 @@ describe('TrueCurrency with Proof-of-reserves check', () => {
     const ONE_DAY_SECONDS = 24 * 60 * 60 // seconds in a day
     const TUSD_FEED_INITIAL_ANSWER = exp(1_000_000, 18).toString() // "1M TUSD in reserves"
     const AMOUNT_TO_MINT = utils.parseEther('1000000')
-    let token: TrueCurrencyWithPoR
+    let token: TrueUSD
     let mockV3Aggregator: MockV3Aggregator
     let owner: Wallet
 
     before(async () => {
         const provider = waffle.provider;
         [owner] = provider.getWallets()
 
-        token = (await new TrueUSDWithPoR__factory(owner).deploy()) as TrueCurrencyWithPoR
+        token = (await new TrueUSD__factory(owner).deploy()) as TrueUSD
 
         // Deploy a mock aggregator to mock Proof of Reserve feed answers
         mockV3Aggregator = await new MockV3Aggregator__factory(owner).deploy(