Merge branch 'v2-prototype' into update-lerna

* v2-prototype: (48 commits)
  Update CHANGELOG
  Rename call data schema id to CallData. Check for TypedArray when hashing data in order-utils crypto
  Fix broken links in sol-cov documentation
  Fix 0x.js ts warnings
  Update yarn.lock
  Fix 0x.js ts warnings
  Fix 0x.js tests on CI
  Fix a bad merge
  Update package versions
  Merge
  Update changelogs
  Add a test for ERC721 Allowance
  Use allowance instead of approval for all in fill-scenarios
  Upgrade sha3 to 1.2.2 to work with node v10
  Check if the token doesn't exist before minting in fill scenarios
  Make downlevelIteration a global config
  Fix tests descriptions
  DRY up the code in order-watcher collision-resistant abi decoder
  Await transactions in fillScenarios
  Rename decodeAssetData to decodeAssetDataOrThrow
  ...

1 files changed, 12 insertions, 0 deletions

diff --git a/packages/order-utils/src/abstract/abstract_order_filled_cancelled_lazy_store.ts b/packages/order-utils/src/abstract/abstract_order_filled_cancelled_lazy_store.ts
new file mode 100644
index 000000000..617bcb224
--- /dev/null
+++ b/packages/order-utils/src/abstract/abstract_order_filled_cancelled_lazy_store.ts
@@ -0,0 +1,12 @@
+import { BigNumber } from '@0xproject/utils';
+
+export abstract class AbstractOrderFilledCancelledLazyStore {
+    public abstract async getFilledTakerAmountAsync(orderHash: string): Promise<BigNumber>;
+    public abstract async getIsCancelledAsync(orderHash: string): Promise<boolean>;
+    public abstract setFilledTakerAmount(orderHash: string, balance: BigNumber): void;
+    public abstract deleteFilledTakerAmount(orderHash: string): void;
+    public abstract setIsCancelled(orderHash: string, isCancelled: boolean): void;
+    public abstract deleteIsCancelled(orderHash: string): void;
+    public abstract deleteAll(): void;
+    public abstract getZRXAssetData(): string;
+}