[Easy] New xDAI Deployment (#965)

Pushing a new version of GP to xDAI, this time with an OWL token that allows burning (thus I was able to add WETH on xDAI and USDT on xDAI for testing).

For a list of xDAI bridged tokens check [here](https://docs.tokenbridge.net/eth-xdai-amb-bridge/multi-token-extension/the-bridged-tokens-list)

The OWL token used here is bridged from the [Rinkeby OWL token](https://rinkeby.etherscan.io/token/0xa7d1c04faf998f9161fc9f800a99a809b84cfc9d?a=0xe0b3700e0aadcb18ed8d4bff648bc99896a18ad1) (until we finalize the implementation), so this is likely not going to be the final deployment. However, it should allow us to test frontend and dex-services.

For instructions on how to bridge Rinkeby OWL to xDAI and back, check: https://docs.tokenbridge.net/eth-xdai-amb-bridge/multi-token-extension/the-bridged-tokens-list

networks.json

@@ -21,8 +21,8 @@
         "IdToAddressBiMap": "0x048E53A455a058462eA58442E1D94Fbc955495cB",
         "IterableAppendOnlySet": "0x57E6B987c2ccd421859A244dd22a0D5a62D88f91"
       },
-      "address": "0x904E0Cf33773244A392faB455d3991aB10554691",
-      "transactionHash": "0x82fd89d1de010bee0dd1d795ed758306f07fb234b5e939a30454b7b4ea386964"
+      "address": "0x25B06305CC4ec6AfCF3E7c0b673da1EF8ae26313",
+      "transactionHash": "0xd5e7da686ace1ae7f1917ad54b8610ee936bdc900e56b495739795fba3d5e7c1"
     }
   },
   "BatchExchangeViewer": {
@@ -38,8 +38,8 @@
     },
     "100": {
       "links": {},
-      "address": "0x33F4EcDa8E8d9e0C2C698f73f3523223f8f50a1A",
-      "transactionHash": "0xb820baca9304ea61e88ff6d2b6c064229eaa580ff9b3a9c8b03d73d8f405490c"
+      "address": "0x51138aad07EbABa6a1D1254cf740Df97B96bFB64",
+      "transactionHash": "0x4afb81a41e4d7633046302eece8b7a38fc6dcd304d3e35db55c150c31fd3eb60"
     }
   },
   "Migrations": {
@@ -55,8 +55,8 @@
     },
     "100": {
       "links": {},
-      "address": "0xa0A77f3bA69f8402C102D60fd8f6530D8F0b666E",
-      "transactionHash": "0xac37eaba7da639baf7155dd906a3fac247cd66714c37b1d6796091e087ac94aa"
+      "address": "0xA18c8F9Ae6c18d177Aa369C64fa4a6956146e1A5",
+      "transactionHash": "0xb77ad5c1a273826f8882be1919ec31c122d4710ac46ab2973d3b69138833c4b8"
     }
   }
 }

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@gnosis.pm/dex-contracts",
-  "version": "0.4.2",
+  "version": "0.4.3",
   "description": "Contracts for dFusion multi-token batch auction exchange",
   "main": "build/common/src/index.js",
   "types": "build/common/src/index.d.ts",