Update dependencies (#113)

package.json

@@ -27,8 +27,8 @@
     "@resolver-engine/imports": "^0.3.3",
     "@resolver-engine/imports-fs": "^0.3.3",
     "ethers": "^4.0.0",
-    "ganache-core": "2.5.6-beta.0",
-    "solc": "^0.5.1"
+    "ganache-core": "^2.5.7",
+    "solc": "0.5.1"
   },
   "resolutions": {
     "web3": "1.0.0-beta.35"
@@ -39,18 +39,18 @@
     "@types/chai-string": "^1.4.1",
     "@types/fs-extra": "^5.0.4",
     "@types/ganache-core": "^2.1.2",
-    "@types/mocha": "^5.2.5",
-    "@types/sinon": "^7.0.3",
+    "@types/mocha": "^5.2.7",
+    "@types/sinon": "^7.0.13",
     "@types/sinon-chai": "^3.2.2",
-    "chai": "^4.1.2",
+    "chai": "^4.2.0",
     "chai-as-promised": "^7.1.1",
-    "chai-string": "~1.4.0",
+    "chai-string": "^1.5.0",
     "fs-extra": "^7.0.1",
-    "mocha": "^5.1.1",
+    "mocha": "^6.1.4",
     "openzeppelin-solidity": "^2.1.1",
     "rimraf": "^2.6.3",
-    "sinon": "^6.1.5",
-    "sinon-chai": "^3.2.0",
+    "sinon": "^7.3.2",
+    "sinon-chai": "^3.3.0",
     "solium": "^1.1.8",
     "ts-node": "^7.0.1",
     "tslint": "^5.12.1",

test/matchers/contracts/events.sol

@@ -1,4 +1,4 @@
-pragma solidity 0.5.1;
+pragma solidity ^0.5.0;
 
 
 contract Events {

test/matchers/contracts/matchers.sol

@@ -1,4 +1,4 @@
-pragma solidity 0.5.1;
+pragma solidity ^0.5.0;
 
 
 contract Matchers {