Adds V3 Market Contract and transactions (#118)

* updates transactions and tests for v3

* PR comments

* remove bug lines and fix PR comments

* Sadie/market v3 review comments (#120)

* update comment - remove exceeds

* remove change percentage

* remove change percentage

* add test back in

* upgrade go -> 1.16

* go -> 1.16

* update go version for ci

* update go sum

Co-authored-by: Sadie Freeman <[email protected]>

.github/workflows/ci.yml

@@ -9,5 +9,5 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-go@v1
         with:
-          go-version: '1.13.10'
+          go-version: '1.16'
       - run: make ci

README.md

@@ -363,7 +363,9 @@ and if they sent the correct amount, they get the Moment back.
 There are two versions of the Top Shot Market Contract.
 `TopShotMarket.cdc` is the original version of the contract that was used
 for the first set of sales in the p2p marketplace, but we made improvements
-to it which are now in `TopShotMarketV2.cdc`.
+to it which are now in `TopShotMarketV3.cdc`.
+
+There is also a V2 version that was deployed to mainnet, but will never be used.
 
 Both versions define a `SaleCollection` resource that users store in their account.
 The resource manages the logic of the sale like listings, de-listing, prices, and 
@@ -376,15 +378,15 @@ put up for sale. In this version, when a moment is purchased, the sale collectio
 uses the capability to withdraw the moment from the main collection and 
 returns it to the buyer.
 
-The second version of the market contract is currently NOT DEPLOYED to mainnet,
+The new version of the market contract is currently NOT DEPLOYED to mainnet,
 but it will be deployed and utilized in the near future.
 
 ## License 
 
 The works in these folders 
 /dapperlabs/nba-smart-contracts/blob/master/contracts/TopShot.cdc 
 /dapperlabs/nba-smart-contracts/blob/master/contracts/MarketTopShot.cdc 
-/dapperlabs/nba-smart-contracts/blob/master/contracts/MarketTopShotV2.cdc 
+/dapperlabs/nba-smart-contracts/blob/master/contracts/MarketTopShotV3.cdc 
 /dapperlabs/nba-smart-contracts/blob/master/contracts/TopShotAdminReceiver.cdc 
 /dapperlabs/nba-smart-contracts/blob/master/contracts/TopShotShardedCollection.cdc 
 

contracts/MarketTopShot.cdc

@@ -4,9 +4,6 @@
 
     Description: Contract definitions for users to sell their moments
 
-    Authors: Joshua Hannan [email protected]
-             Dieter Shirley [email protected]
-
     Marketplace is where users can create a sale collection that they
     store in their account storage. In the sale collection, 
     they can put their NFTs up for sale with a price and publish a 

contracts/TopShot.cdc

@@ -1,9 +1,6 @@
 /*
     Description: Central Smart Contract for NBA TopShot
 
-    authors: Joshua Hannan [email protected]
-             Dieter Shirley [email protected]
-
     This smart contract contains the core functionality for 
     NBA Top Shot, created by Dapper Labs
 

contracts/TopShotMarketV2.cdc

@@ -4,9 +4,6 @@
 
     Description: Contract definitions for users to sell their moments
 
-    Authors: Joshua Hannan [email protected]
-             Dieter Shirley [email protected]
-
     Marketplace is where users can create a sale collection that they
     store in their account storage. In the sale collection, 
     they can put their NFTs up for sale with a price and publish a