Merge pull request unitprotocol#31 from uwe/reduce-warnings

add license and solidity version to interfaces

contracts/interfaces/IBearingAssetOracle.sol

@@ -1,3 +1,10 @@
+// SPDX-License-Identifier: bsl-1.1
+
+/*
+  Copyright 2020 Unit Protocol: Artem Zakharov ([email protected]).
+*/
+pragma solidity ^0.7.6;
+
 interface IBearingAssetOracle {
     function assetToUsd ( address bearing, uint256 amount ) external view returns ( uint256 );
     function bearingToUnderlying ( address bearing, uint256 amount ) external view returns ( address, uint256 );

contracts/interfaces/ICDPRegistry.sol

@@ -1,13 +1,18 @@
-pragma experimental ABIEncoderV2;
+// SPDX-License-Identifier: bsl-1.1
 
+/*
+  Copyright 2020 Unit Protocol: Artem Zakharov ([email protected]).
+*/
+pragma solidity ^0.7.6;
+pragma experimental ABIEncoderV2;
 
 interface ICDPRegistry {
-    
+
     struct CDP {
         address asset;
         address owner;
     }
-    
+
     function batchCheckpoint ( address[] calldata assets, address[] calldata owners ) external;
     function batchCheckpointForAsset ( address asset, address[] calldata owners ) external;
     function checkpoint ( address asset, address owner ) external;

contracts/interfaces/ICollateralRegistry.sol

@@ -1,3 +1,10 @@
+// SPDX-License-Identifier: bsl-1.1
+
+/*
+  Copyright 2020 Unit Protocol: Artem Zakharov ([email protected]).
+*/
+pragma solidity ^0.7.6;
+
 interface ICollateralRegistry {
     function addCollateral ( address asset ) external;
     function collateralId ( address ) external view returns ( uint256 );

contracts/interfaces/ICurvePool.sol

@@ -1,3 +1,10 @@
+// SPDX-License-Identifier: bsl-1.1
+
+/*
+  Copyright 2020 Unit Protocol: Artem Zakharov ([email protected]).
+*/
+pragma solidity ^0.7.6;
+
 interface ICurvePool {
     function get_virtual_price() external view returns (uint);
     function coins(uint) external view returns (address);

contracts/interfaces/ICurveProvider.sol

@@ -1,3 +1,10 @@
+// SPDX-License-Identifier: bsl-1.1
+
+/*
+  Copyright 2020 Unit Protocol: Artem Zakharov ([email protected]).
+*/
+pragma solidity ^0.7.6;
+
 interface ICurveProvider {
     function get_registry() external view returns (address);
 }

contracts/interfaces/ICurveRegistry.sol

@@ -1,3 +1,10 @@
+// SPDX-License-Identifier: bsl-1.1
+
+/*
+  Copyright 2020 Unit Protocol: Artem Zakharov ([email protected]).
+*/
+pragma solidity ^0.7.6;
+
 interface ICurveRegistry {
     function get_pool_from_lp_token(address) external view returns (address);
     function get_n_coins(address) external view returns (uint[2] memory);

contracts/interfaces/IForceTransferAssetStore.sol

@@ -1,3 +1,10 @@
+// SPDX-License-Identifier: bsl-1.1
+
+/*
+  Copyright 2020 Unit Protocol: Artem Zakharov ([email protected]).
+*/
+pragma solidity ^0.7.6;
+
 interface IForceTransferAssetStore {
     function shouldForceTransfer ( address ) external view returns ( bool );
     function add ( address asset ) external;

contracts/interfaces/IOracleEth.sol

@@ -1,3 +1,10 @@
+// SPDX-License-Identifier: bsl-1.1
+
+/*
+  Copyright 2020 Unit Protocol: Artem Zakharov ([email protected]).
+*/
+pragma solidity ^0.7.6;
+
 interface IOracleEth {
 
     // returns Q112-encoded value

contracts/interfaces/IOracleRegistry.sol

@@ -1,5 +1,10 @@
-pragma abicoder v2;
+// SPDX-License-Identifier: bsl-1.1
 
+/*
+  Copyright 2020 Unit Protocol: Artem Zakharov ([email protected]).
+*/
+pragma solidity ^0.7.6;
+pragma abicoder v2;
 
 interface IOracleRegistry {
 

contracts/interfaces/IOracleUsd.sol

@@ -1,3 +1,10 @@
+// SPDX-License-Identifier: bsl-1.1
+
+/*
+  Copyright 2020 Unit Protocol: Artem Zakharov ([email protected]).
+*/
+pragma solidity ^0.7.6;
+
 interface IOracleUsd {
 
     // returns Q112-encoded value

contracts/interfaces/IToken.sol

@@ -1,3 +1,10 @@
+// SPDX-License-Identifier: bsl-1.1
+
+/*
+  Copyright 2020 Unit Protocol: Artem Zakharov ([email protected]).
+*/
+pragma solidity ^0.7.6;
+
 interface IToken {
     function decimals() external view returns (uint8);
 }

contracts/interfaces/IVault.sol

@@ -1,3 +1,10 @@
+// SPDX-License-Identifier: bsl-1.1
+
+/*
+  Copyright 2020 Unit Protocol: Artem Zakharov ([email protected]).
+*/
+pragma solidity ^0.7.6;
+
 interface IVault {
     function DENOMINATOR_1E2 (  ) external view returns ( uint256 );
     function DENOMINATOR_1E5 (  ) external view returns ( uint256 );

contracts/interfaces/IVaultManagerParameters.sol

@@ -1,3 +1,10 @@
+// SPDX-License-Identifier: bsl-1.1
+
+/*
+  Copyright 2020 Unit Protocol: Artem Zakharov ([email protected]).
+*/
+pragma solidity ^0.7.6;
+
 interface IVaultManagerParameters {
     function devaluationPeriod ( address ) external view returns ( uint256 );
     function initialCollateralRatio ( address ) external view returns ( uint256 );

contracts/interfaces/IVaultParameters.sol

@@ -1,3 +1,10 @@
+// SPDX-License-Identifier: bsl-1.1
+
+/*
+  Copyright 2020 Unit Protocol: Artem Zakharov ([email protected]).
+*/
+pragma solidity ^0.7.6;
+
 interface IVaultParameters {
     function canModifyVault ( address ) external view returns ( bool );
     function foundation (  ) external view returns ( address );

contracts/interfaces/IWETH.sol

@@ -1,3 +1,10 @@
+// SPDX-License-Identifier: bsl-1.1
+
+/*
+  Copyright 2020 Unit Protocol: Artem Zakharov ([email protected]).
+*/
+pragma solidity ^0.7.6;
+
 interface IWETH {
     function deposit() external payable;
     function transfer(address to, uint value) external returns (bool);

contracts/interfaces/IWrappedToUnderlyingOracle.sol

@@ -1,3 +1,10 @@
+// SPDX-License-Identifier: bsl-1.1
+
+/*
+  Copyright 2020 Unit Protocol: Artem Zakharov ([email protected]).
+*/
+pragma solidity ^0.7.6;
+
 interface IWrappedToUnderlyingOracle {
     function assetToUnderlying(address) external view returns (address);
 }

contracts/interfaces/IcyToken.sol

@@ -1,3 +1,10 @@
+// SPDX-License-Identifier: bsl-1.1
+
+/*
+  Copyright 2020 Unit Protocol: Artem Zakharov ([email protected]).
+*/
+pragma solidity ^0.7.6;
+
 interface IcyToken {
     function underlying() external view returns (address);
     function implementation() external view returns (address);