update abi-gen with new method interfaces (#2325)

* update abi-gen with new method interfaces

* wip: get all packages to build

* wip: get all packages to build

* Fix two contract wrapper calls

* Export necessary types part of the contract wrapper public interfaces

* Revive and fix wrapper_unit_tests

* Remove duplicate type

* Fix lib_exchange_rich_error_decoder tests

* Fix remaining test failures in contracts-* packages

* Prettier fixes

* remove transactionHelper

* lint and update changelogs

* Fix prettier

* Revert changes to reference docs

* Add back changelog already published and add revert changelog entry

* Add missing CHANGELOG entries

* Add missing comma

* Update mesh-rpc-client dep

* Update Mesh RPC logic in @0x/orderbook to v6.0.1-beta

* Align package versions

contracts/utils/test/lib_eip712.ts

@@ -45,12 +45,9 @@ describe('LibEIP712', () => {
             chainId,
             verifyingContract,
         });
-        const actualHash = await lib.externalHashEIP712DomainSeperator.callAsync(
-            name,
-            version,
-            new BigNumber(chainId),
-            verifyingContract,
-        );
+        const actualHash = await lib
+            .externalHashEIP712DomainSeperator(name, version, new BigNumber(chainId), verifyingContract)
+            .callAsync();
         expect(actualHash).to.be.eq(hexConcat(expectedHash));
     }
 
@@ -84,7 +81,7 @@ describe('LibEIP712', () => {
         const expectedHash = '0x'.concat(ethUtil.sha3(input).toString('hex'));
 
         // Get the actual hash by calling the smart contract
-        const actualHash = await lib.externalHashEIP712Message.callAsync(domainHash, hashStruct);
+        const actualHash = await lib.externalHashEIP712Message(domainHash, hashStruct).callAsync();
 
         // Verify that the actual hash matches the expected hash
         expect(actualHash).to.be.eq(expectedHash);