diff --git a/remix-lib/src/code/opcodes.js b/remix-lib/src/code/opcodes.js
index 765149dbbf..6620e6f99d 100644
--- a/remix-lib/src/code/opcodes.js
+++ b/remix-lib/src/code/opcodes.js
@@ -27,6 +27,9 @@ var codes = {
   0x18: ['XOR', 3, 2, 1, false],
   0x19: ['NOT', 3, 1, 1, false],
   0x1a: ['BYTE', 3, 2, 1, false],
+  0x1b: ['SHL', 3, 2, 1, false],
+  0x1c: ['SHR', 3, 2, 1, false],
+  0x1d: ['SAR', 3, 2, 1, false],
 
   // 0x20 range - crypto
   0x20: ['SHA3', 30, 2, 1, false],
@@ -150,6 +153,7 @@ var codes = {
   0xf2: ['CALLCODE', 700, 7, 1, true, true],
   0xf3: ['RETURN', 0, 2, 0, false],
   0xf4: ['DELEGATECALL', 700, 6, 1, true, true],
+  0xf5: ['CREATE2', 32000, 4, 1, true, true],
   0xfa: ['STATICCALL', 700, 6, 1, true, true],
   0xfd: ['REVERT', 0, 2, 0, false],
 
diff --git a/remix-tests/package-lock.json b/remix-tests/package-lock.json
index 9f7c712812..7f4700d93f 100644
--- a/remix-tests/package-lock.json
+++ b/remix-tests/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "remix-tests",
-  "version": "0.1.18",
+  "version": "0.1.19",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -883,21 +883,6 @@
         "@types/underscore": "*"
       }
     },
-    "abstract-leveldown": {
-      "version": "2.6.3",
-      "resolved": "https://registry.npmjs.org/abstract-leveldown/-/abstract-leveldown-2.6.3.tgz",
-      "integrity": "sha512-2++wDf/DYqkPR3o5tbfdhF96EfMApo1GpPfzOsR/ZYXdkSmELlvOOEAl9iKkRsktMPHdGjO4rtkBpf2I7TiTeA==",
-      "requires": {
-        "xtend": "~4.0.0"
-      },
-      "dependencies": {
-        "xtend": {
-          "version": "4.0.2",
-          "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.2.tgz",
-          "integrity": "sha512-LKYU1iAXJXUgAXn9URjiu+MWhyUXHsvfp7mcuYm9dSUKK0/CjtrUwFAxD82/mCWbtLsGjFIad0wIsod4zrTAEQ=="
-        }
-      }
-    },
     "accepts": {
       "version": "1.3.7",
       "resolved": "https://registry.npmjs.org/accepts/-/accepts-1.3.7.tgz",
@@ -910,17 +895,14 @@
     "acorn": {
       "version": "5.7.3",
       "resolved": "https://registry.npmjs.org/acorn/-/acorn-5.7.3.tgz",
-      "integrity": "sha512-T/zvzYRfbVojPWahDsE5evJdHb3oJoQfFbsrKM7w5Zcs++Tr257tia3BmMP8XYVjp1S9RZXQMh7gao96BlqZOw=="
-    },
-    "acorn-es7-plugin": {
-      "version": "1.1.7",
-      "resolved": "https://registry.npmjs.org/acorn-es7-plugin/-/acorn-es7-plugin-1.1.7.tgz",
-      "integrity": "sha1-8u4fMiipDurRJF+asZIusucdM2s="
+      "integrity": "sha512-T/zvzYRfbVojPWahDsE5evJdHb3oJoQfFbsrKM7w5Zcs++Tr257tia3BmMP8XYVjp1S9RZXQMh7gao96BlqZOw==",
+      "dev": true
     },
     "acorn-jsx": {
       "version": "3.0.1",
       "resolved": "https://registry.npmjs.org/acorn-jsx/-/acorn-jsx-3.0.1.tgz",
       "integrity": "sha1-r9+UiPsezvyDSPb7IvRk4ypYs2s=",
+      "dev": true,
       "requires": {
         "acorn": "^3.0.4"
       },
@@ -928,7 +910,8 @@
         "acorn": {
           "version": "3.3.0",
           "resolved": "https://registry.npmjs.org/acorn/-/acorn-3.3.0.tgz",
-          "integrity": "sha1-ReN/s56No/JbruP/U2niu18iAXo="
+          "integrity": "sha1-ReN/s56No/JbruP/U2niu18iAXo=",
+          "dev": true
         }
       }
     },
@@ -941,6 +924,7 @@
       "version": "4.11.8",
       "resolved": "https://registry.npmjs.org/ajv/-/ajv-4.11.8.tgz",
       "integrity": "sha1-gv+wKynmYq5TvcIK8VlHcGc5xTY=",
+      "dev": true,
       "requires": {
         "co": "^4.6.0",
         "json-stable-stringify": "^1.0.1"
@@ -949,25 +933,14 @@
     "ajv-keywords": {
       "version": "1.5.1",
       "resolved": "https://registry.npmjs.org/ajv-keywords/-/ajv-keywords-1.5.1.tgz",
-      "integrity": "sha1-MU3QpLM2j609/NxU7eYXG4htrzw="
+      "integrity": "sha1-MU3QpLM2j609/NxU7eYXG4htrzw=",
+      "dev": true
     },
     "ansi-escapes": {
       "version": "1.4.0",
       "resolved": "https://registry.npmjs.org/ansi-escapes/-/ansi-escapes-1.4.0.tgz",
-      "integrity": "sha1-06ioOzGapneTZisT52HHkRQiMG4="
-    },
-    "ansi-gray": {
-      "version": "0.1.1",
-      "resolved": "https://registry.npmjs.org/ansi-gray/-/ansi-gray-0.1.1.tgz",
-      "integrity": "sha1-KWLPVOyXksSFEKPetSRDaGHvclE=",
-      "requires": {
-        "ansi-wrap": "0.1.0"
-      }
-    },
-    "ansi-regex": {
-      "version": "4.1.0",
-      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-4.1.0.tgz",
-      "integrity": "sha512-1apePfXM1UOSqw0o9IiFAovVz9M5S1Dg+4TrDwfMewQ6p/rmMueb7tWZjQ1rx4Loy1ArBggoqGpfqqdI4rondg=="
+      "integrity": "sha1-06ioOzGapneTZisT52HHkRQiMG4=",
+      "dev": true
     },
     "ansi-styles": {
       "version": "3.2.1",
@@ -977,11 +950,6 @@
         "color-convert": "^1.9.0"
       }
     },
-    "ansi-wrap": {
-      "version": "0.1.0",
-      "resolved": "https://registry.npmjs.org/ansi-wrap/-/ansi-wrap-0.1.0.tgz",
-      "integrity": "sha1-qCJQ3bABXponyoLoLqYDu/pF768="
-    },
     "any-promise": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/any-promise/-/any-promise-1.3.0.tgz",
@@ -997,6 +965,7 @@
       "version": "1.0.10",
       "resolved": "https://registry.npmjs.org/argparse/-/argparse-1.0.10.tgz",
       "integrity": "sha512-o5Roy6tNG4SL/FOkCAN6RzjiakZS25RLYFrcMttJqbdd8BWrnA+fGz57iN5Pb06pvBGvl5gQ0B48dJlslXvoTg==",
+      "dev": true,
       "requires": {
         "sprintf-js": "~1.0.2"
       }
@@ -1010,6 +979,7 @@
       "version": "2.1.0",
       "resolved": "https://registry.npmjs.org/array.prototype.find/-/array.prototype.find-2.1.0.tgz",
       "integrity": "sha512-Wn41+K1yuO5p7wRZDl7890c3xvv5UBrfVXTVIe28rSQb6LS0fZMDrQB6PAcxQFRFy6vJTLDc3A2+3CjQdzVKRg==",
+      "dev": true,
       "requires": {
         "define-properties": "^1.1.3",
         "es-abstract": "^1.13.0"
@@ -1046,14 +1016,6 @@
         "lodash": "^4.17.14"
       }
     },
-    "async-eventemitter": {
-      "version": "0.2.4",
-      "resolved": "https://registry.npmjs.org/async-eventemitter/-/async-eventemitter-0.2.4.tgz",
-      "integrity": "sha512-pd20BwL7Yt1zwDFy+8MX8F1+WCT8aQeKj0kQnTrH9WaeRETlRamVhD0JtRPmrV4GfOJ2F9CvdQkZeZhnh2TuHw==",
-      "requires": {
-        "async": "^2.4.0"
-      }
-    },
     "async-limiter": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/async-limiter/-/async-limiter-1.0.1.tgz",
@@ -1078,6 +1040,7 @@
       "version": "6.26.0",
       "resolved": "https://registry.npmjs.org/babel-code-frame/-/babel-code-frame-6.26.0.tgz",
       "integrity": "sha1-Y/1D99weO7fONZR9uP42mj9Yx0s=",
+      "dev": true,
       "requires": {
         "chalk": "^1.1.3",
         "esutils": "^2.0.2",
@@ -1111,26 +1074,6 @@
         "tweetnacl": "^0.14.3"
       }
     },
-    "bignumber.js": {
-      "version": "git+https://github.com/frozeman/bignumber.js-nolookahead.git#57692b3ecfc98bbdd6b3a516cb2353652ea49934",
-      "from": "git+https://github.com/frozeman/bignumber.js-nolookahead.git"
-    },
-    "bindings": {
-      "version": "1.5.0",
-      "resolved": "https://registry.npmjs.org/bindings/-/bindings-1.5.0.tgz",
-      "integrity": "sha512-p2q/t/mhvuOj/UeLlV6566GD/guowlr0hHxClI0W9m7MWYkL1F0hLo+0Aexs9HSPCtR1SXQ0TD3MMKrXZajbiQ==",
-      "requires": {
-        "file-uri-to-path": "1.0.0"
-      }
-    },
-    "bip66": {
-      "version": "1.1.5",
-      "resolved": "https://registry.npmjs.org/bip66/-/bip66-1.1.5.tgz",
-      "integrity": "sha1-AfqHSHhcpwlV1QESF9GzE5lpyiI=",
-      "requires": {
-        "safe-buffer": "^5.0.1"
-      }
-    },
     "bl": {
       "version": "1.2.2",
       "resolved": "https://registry.npmjs.org/bl/-/bl-1.2.2.tgz",
@@ -1308,7 +1251,8 @@
     "buffer-from": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/buffer-from/-/buffer-from-1.1.1.tgz",
-      "integrity": "sha512-MQcXEUbCKtEo7bhqEs6560Hyd4XaovZlO/k9V3hjVUF/zwW7KBVdSK4gIt/bzwS9MbR5qob+F5jusZsb0YQK2A=="
+      "integrity": "sha512-MQcXEUbCKtEo7bhqEs6560Hyd4XaovZlO/k9V3hjVUF/zwW7KBVdSK4gIt/bzwS9MbR5qob+F5jusZsb0YQK2A==",
+      "dev": true
     },
     "buffer-to-arraybuffer": {
       "version": "0.0.5",
@@ -1323,7 +1267,8 @@
     "builtin-modules": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/builtin-modules/-/builtin-modules-1.1.1.tgz",
-      "integrity": "sha1-Jw8HbFpywC9bZaR9+Uxf46J4iS8="
+      "integrity": "sha1-Jw8HbFpywC9bZaR9+Uxf46J4iS8=",
+      "dev": true
     },
     "bytes": {
       "version": "3.1.0",
@@ -1334,6 +1279,7 @@
       "version": "0.1.0",
       "resolved": "https://registry.npmjs.org/caller-path/-/caller-path-0.1.0.tgz",
       "integrity": "sha1-lAhe9jWB7NPaqSREqP6U6CV3dR8=",
+      "dev": true,
       "requires": {
         "callsites": "^0.2.0"
       }
@@ -1341,7 +1287,8 @@
     "callsites": {
       "version": "0.2.0",
       "resolved": "https://registry.npmjs.org/callsites/-/callsites-0.2.0.tgz",
-      "integrity": "sha1-r6uWJikQp/M8GaV3WCXGnzTjUMo="
+      "integrity": "sha1-r6uWJikQp/M8GaV3WCXGnzTjUMo=",
+      "dev": true
     },
     "camel-case": {
       "version": "3.0.0",
@@ -1352,11 +1299,6 @@
         "upper-case": "^1.1.1"
       }
     },
-    "camelcase": {
-      "version": "5.3.1",
-      "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-5.3.1.tgz",
-      "integrity": "sha512-L28STB170nwWS63UjtlEOE3dldQApaJXZkOI1uMFfzf3rRuPegHaHesyee+YxQ+W6SvRDQV6UrdOdRiR153wJg=="
-    },
     "caniuse-lite": {
       "version": "1.0.30000989",
       "resolved": "https://registry.npmjs.org/caniuse-lite/-/caniuse-lite-1.0.30000989.tgz",
@@ -1372,6 +1314,7 @@
       "version": "1.1.3",
       "resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
       "integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
+      "dev": true,
       "requires": {
         "ansi-styles": "^2.2.1",
         "escape-string-regexp": "^1.0.2",
@@ -1383,17 +1326,20 @@
         "ansi-regex": {
           "version": "2.1.1",
           "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
-          "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8="
+          "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=",
+          "dev": true
         },
         "ansi-styles": {
           "version": "2.2.1",
           "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-2.2.1.tgz",
-          "integrity": "sha1-tDLdM1i2NM914eRmQ2gkBTPB3b4="
+          "integrity": "sha1-tDLdM1i2NM914eRmQ2gkBTPB3b4=",
+          "dev": true
         },
         "strip-ansi": {
           "version": "3.0.1",
           "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
           "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
+          "dev": true,
           "requires": {
             "ansi-regex": "^2.0.0"
           }
@@ -1425,14 +1371,6 @@
         "upper-case-first": "^1.1.0"
       }
     },
-    "checkpoint-store": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/checkpoint-store/-/checkpoint-store-1.1.0.tgz",
-      "integrity": "sha1-BOTLUWuRQziTWB5tRgGnjpVS6gY=",
-      "requires": {
-        "functional-red-black-tree": "^1.0.1"
-      }
-    },
     "cipher-base": {
       "version": "1.0.4",
       "resolved": "https://registry.npmjs.org/cipher-base/-/cipher-base-1.0.4.tgz",
@@ -1445,12 +1383,14 @@
     "circular-json": {
       "version": "0.3.3",
       "resolved": "https://registry.npmjs.org/circular-json/-/circular-json-0.3.3.tgz",
-      "integrity": "sha512-UZK3NBx2Mca+b5LsG7bY183pHWt5Y1xts4P3Pz7ENTwGVnJOUWbRb3ocjvX7hx9tq/yTAdclXm9sZ38gNuem4A=="
+      "integrity": "sha512-UZK3NBx2Mca+b5LsG7bY183pHWt5Y1xts4P3Pz7ENTwGVnJOUWbRb3ocjvX7hx9tq/yTAdclXm9sZ38gNuem4A==",
+      "dev": true
     },
     "cli-cursor": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/cli-cursor/-/cli-cursor-1.0.2.tgz",
       "integrity": "sha1-ZNo/fValRBLll5S9Ytw1KV6PKYc=",
+      "dev": true,
       "requires": {
         "restore-cursor": "^1.0.1"
       }
@@ -1458,27 +1398,20 @@
     "cli-width": {
       "version": "2.2.0",
       "resolved": "https://registry.npmjs.org/cli-width/-/cli-width-2.2.0.tgz",
-      "integrity": "sha1-/xnt6Kml5XkyQUewwR8PvLq+1jk="
-    },
-    "cliui": {
-      "version": "5.0.0",
-      "resolved": "https://registry.npmjs.org/cliui/-/cliui-5.0.0.tgz",
-      "integrity": "sha512-PYeGSEmmHM6zvoef2w8TPzlrnNpXIjTipYK780YswmIP9vjxmd6Y2a3CB2Ks6/AU8NHjZugXvo8w3oWM2qnwXA==",
-      "requires": {
-        "string-width": "^3.1.0",
-        "strip-ansi": "^5.2.0",
-        "wrap-ansi": "^5.1.0"
-      }
+      "integrity": "sha1-/xnt6Kml5XkyQUewwR8PvLq+1jk=",
+      "dev": true
     },
     "co": {
       "version": "4.6.0",
       "resolved": "https://registry.npmjs.org/co/-/co-4.6.0.tgz",
-      "integrity": "sha1-bqa989hTrlTMuOR7+gvz+QMfsYQ="
+      "integrity": "sha1-bqa989hTrlTMuOR7+gvz+QMfsYQ=",
+      "dev": true
     },
     "code-point-at": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/code-point-at/-/code-point-at-1.1.0.tgz",
-      "integrity": "sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c="
+      "integrity": "sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c=",
+      "dev": true
     },
     "color": {
       "version": "3.0.0",
@@ -1511,11 +1444,6 @@
         "simple-swizzle": "^0.2.2"
       }
     },
-    "color-support": {
-      "version": "1.1.3",
-      "resolved": "https://registry.npmjs.org/color-support/-/color-support-1.1.3.tgz",
-      "integrity": "sha512-qiBjkpbMLO/HL68y+lh4q0/O1MZFj2RX6X/KmMa3+gJD3z+WwI1ZzDHysvqHGS3mP6mznPckpXmw1nI9cJjyRg=="
-    },
     "colornames": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/colornames/-/colornames-1.1.1.tgz",
@@ -1543,11 +1471,6 @@
         "delayed-stream": "~1.0.0"
       }
     },
-    "command-exists": {
-      "version": "1.2.8",
-      "resolved": "https://registry.npmjs.org/command-exists/-/command-exists-1.2.8.tgz",
-      "integrity": "sha512-PM54PkseWbiiD/mMsbvW351/u+dafwTJ0ye2qB60G1aGQP9j3xK2gmMDc+R34L3nDtx4qMCitXT75mkbkGJDLw=="
-    },
     "commander": {
       "version": "2.20.0",
       "resolved": "https://registry.npmjs.org/commander/-/commander-2.20.0.tgz",
@@ -1562,6 +1485,7 @@
       "version": "1.6.2",
       "resolved": "https://registry.npmjs.org/concat-stream/-/concat-stream-1.6.2.tgz",
       "integrity": "sha512-27HBghJxjiZtIk3Ycvn/4kbJk/1uZuJFfuPEns6LaEvpvG1f0hTea8lilrouyo9mVc2GWdcEZ8OLoGmSADlrCw==",
+      "dev": true,
       "requires": {
         "buffer-from": "^1.0.0",
         "inherits": "^2.0.3",
@@ -1581,7 +1505,8 @@
     "contains-path": {
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       "resolved": "https://registry.npmjs.org/contains-path/-/contains-path-0.1.0.tgz",
-      "integrity": "sha1-/ozxhP9mcLa67wGp1IYaXL7EEgo="
+      "integrity": "sha1-/ozxhP9mcLa67wGp1IYaXL7EEgo=",
+      "dev": true
     },
     "content-disposition": {
       "version": "0.5.3",
@@ -1702,15 +1627,11 @@
         "randomfill": "^1.0.3"
       }
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-    "crypto-js": {
-      "version": "3.1.8",
-      "resolved": "https://registry.npmjs.org/crypto-js/-/crypto-js-3.1.8.tgz",
-      "integrity": "sha1-cV8HC/YBTyrpkqmLOSkli3E/CNU="
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       "integrity": "sha512-m62ShEObQ39CfralilEQRjH6oAMtNCV1xJyEx5LpRYUVN+EviphDgUc/F3hnYbADmkiNs67Y+3ylmlG7Lnu+FA==",
+      "dev": true,
       "requires": {
         "es5-ext": "^0.10.50",
         "type": "^1.0.1"
@@ -1735,12 +1656,8 @@
     "debug-log": {
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       "resolved": "https://registry.npmjs.org/debug-log/-/debug-log-1.0.1.tgz",
-      "integrity": "sha1-IwdjLUwEOCuN+KMvcLiVBG1SdF8="
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-    "decamelize": {
-      "version": "1.2.0",
-      "resolved": "https://registry.npmjs.org/decamelize/-/decamelize-1.2.0.tgz",
-      "integrity": "sha1-9lNNFRSCabIDUue+4m9QH5oZEpA="
+      "integrity": "sha1-IwdjLUwEOCuN+KMvcLiVBG1SdF8=",
+      "dev": true
     },
     "decode-uri-component": {
       "version": "0.2.0",
@@ -1851,15 +1768,8 @@
     "deep-is": {
       "version": "0.1.3",
       "resolved": "https://registry.npmjs.org/deep-is/-/deep-is-0.1.3.tgz",
-      "integrity": "sha1-s2nW+128E+7PUk+RsHD+7cNXzzQ="
-    },
-    "deferred-leveldown": {
-      "version": "1.2.2",
-      "resolved": "https://registry.npmjs.org/deferred-leveldown/-/deferred-leveldown-1.2.2.tgz",
-      "integrity": "sha512-uukrWD2bguRtXilKt6cAWKyoXrTSMo5m7crUdLfWQmu8kIm88w3QZoUL+6nhpfKVmhHANER6Re3sKoNoZ3IKMA==",
-      "requires": {
-        "abstract-leveldown": "~2.6.0"
-      }
+      "integrity": "sha1-s2nW+128E+7PUk+RsHD+7cNXzzQ=",
+      "dev": true
     },
     "define-properties": {
       "version": "1.1.3",
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-        "number-to-bn": "1.7.0",
-        "randomhex": "0.1.5",
-        "underscore": "1.8.3",
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-          "integrity": "sha1-UzRK2xRhehP26N0s4okF0cC6MhU="
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-          "resolved": "https://registry.npmjs.org/utf8/-/utf8-2.1.1.tgz",
-          "integrity": "sha1-LgHbAvfY0JRPdxBPFgnrDDBM92g="
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-      }
-    },
     "websocket": {
       "version": "git://github.com/frozeman/WebSocket-Node.git#6c72925e3f8aaaea8dc8450f97627e85263999f2",
       "from": "git://github.com/frozeman/WebSocket-Node.git#browserifyCompatible",
@@ -6979,16 +5790,6 @@
         "yaeti": "^0.0.6"
       }
     },
-    "webworkify": {
-      "version": "1.5.0",
-      "resolved": "https://registry.npmjs.org/webworkify/-/webworkify-1.5.0.tgz",
-      "integrity": "sha512-AMcUeyXAhbACL8S2hqqdqOLqvJ8ylmIbNwUIqQujRSouf4+eUFaXbG6F1Rbu+srlJMmxQWsiU7mOJi0nMBfM1g=="
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-    "which-module": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/which-module/-/which-module-2.0.0.tgz",
-      "integrity": "sha1-2e8H3Od7mQK4o6j6SzHD4/fm6Ho="
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       "resolved": "https://registry.npmjs.org/winston/-/winston-3.2.1.tgz",
@@ -7037,17 +5838,8 @@
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       "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-1.0.0.tgz",
-      "integrity": "sha1-J1hIEIkUVqQXHI0CJkQa3pDLyus="
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-    "wrap-ansi": {
-      "version": "5.1.0",
-      "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-5.1.0.tgz",
-      "integrity": "sha512-QC1/iN/2/RPVJ5jYK8BGttj5z83LmSKmvbvrXPNCLZSEb32KKVDJDl/MOt2N01qU2H/FkzEa9PKto1BqDjtd7Q==",
-      "requires": {
-        "ansi-styles": "^3.2.0",
-        "string-width": "^3.0.0",
-        "strip-ansi": "^5.0.0"
-      }
+      "integrity": "sha1-J1hIEIkUVqQXHI0CJkQa3pDLyus=",
+      "dev": true
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@@ -7058,18 +5850,11 @@
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       "resolved": "https://registry.npmjs.org/write/-/write-0.2.1.tgz",
       "integrity": "sha1-X8A4KOJkzqP+kUVUdvejxWbLB1c=",
+      "dev": true,
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       }
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-    "ws": {
-      "version": "5.2.2",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-5.2.2.tgz",
-      "integrity": "sha512-jaHFD6PFv6UgoIVda6qZllptQsMlDEJkTQcybzzXDYM1XO9Y8em691FGMPmM46WGyLU4z9KMgQN+qrux/nhlHA==",
-      "requires": {
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-      }
-    },
     "xhr": {
       "version": "2.5.0",
       "resolved": "https://registry.npmjs.org/xhr/-/xhr-2.5.0.tgz",
@@ -7110,11 +5895,6 @@
         "xhr-request": "^1.0.1"
       }
     },
-    "xhr2": {
-      "version": "0.2.0",
-      "resolved": "https://registry.npmjs.org/xhr2/-/xhr2-0.2.0.tgz",
-      "integrity": "sha512-BDtiD0i2iKPK/S8OAZfpk6tyzEDnKKSjxWHcMBVmh+LuqJ8A32qXTyOx+TVOg2dKvq6zGBq2sgKPkEeRs1qTRA=="
-    },
     "xhr2-cookies": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/xhr2-cookies/-/xhr2-cookies-1.1.0.tgz",
@@ -7128,55 +5908,11 @@
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       "integrity": "sha1-Z/4HXFwk/vOfnWX197f+dRcZaPw="
     },
-    "xtend": {
-      "version": "2.1.2",
-      "resolved": "https://registry.npmjs.org/xtend/-/xtend-2.1.2.tgz",
-      "integrity": "sha1-bv7MKk2tjmlixJAbM3znuoe10os=",
-      "requires": {
-        "object-keys": "~0.4.0"
-      }
-    },
-    "y18n": {
-      "version": "4.0.0",
-      "resolved": "https://registry.npmjs.org/y18n/-/y18n-4.0.0.tgz",
-      "integrity": "sha512-r9S/ZyXu/Xu9q1tYlpsLIsa3EeLXXk0VwlxqTcFRfg9EhMW+17kbt9G0NrgCmhGb5vT2hyhJZLfDGx+7+5Uj/w=="
-    },
     "yaeti": {
       "version": "0.0.6",
       "resolved": "https://registry.npmjs.org/yaeti/-/yaeti-0.0.6.tgz",
       "integrity": "sha1-8m9ITXJoTPQr7ft2lwqhYI+/lXc="
     },
-    "yallist": {
-      "version": "3.0.3",
-      "resolved": "https://registry.npmjs.org/yallist/-/yallist-3.0.3.tgz",
-      "integrity": "sha512-S+Zk8DEWE6oKpV+vI3qWkaK+jSbIK86pCwe2IF/xwIpQ8jEuxpw9NyaGjmp9+BoJv5FV2piqCDcoCtStppiq2A=="
-    },
-    "yargs": {
-      "version": "13.3.0",
-      "resolved": "https://registry.npmjs.org/yargs/-/yargs-13.3.0.tgz",
-      "integrity": "sha512-2eehun/8ALW8TLoIl7MVaRUrg+yCnenu8B4kBlRxj3GJGDKU1Og7sMXPNm1BYyM1DOJmTZ4YeN/Nwxv+8XJsUA==",
-      "requires": {
-        "cliui": "^5.0.0",
-        "find-up": "^3.0.0",
-        "get-caller-file": "^2.0.1",
-        "require-directory": "^2.1.1",
-        "require-main-filename": "^2.0.0",
-        "set-blocking": "^2.0.0",
-        "string-width": "^3.0.0",
-        "which-module": "^2.0.0",
-        "y18n": "^4.0.0",
-        "yargs-parser": "^13.1.1"
-      }
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-    "yargs-parser": {
-      "version": "13.1.1",
-      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-13.1.1.tgz",
-      "integrity": "sha512-oVAVsHz6uFrg3XQheFII8ESO2ssAf9luWuAd6Wexsu4F3OtIW0o8IribPXYrD4WC24LWtPrJlGy87y5udK+dxQ==",
-      "requires": {
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-        "decamelize": "^1.2.0"
-      }
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     "yauzl": {
       "version": "2.10.0",
       "resolved": "https://registry.npmjs.org/yauzl/-/yauzl-2.10.0.tgz",
diff --git a/remix-tests/package.json b/remix-tests/package.json
index 485d9a97da..2c43a2d3dc 100644
--- a/remix-tests/package.json
+++ b/remix-tests/package.json
@@ -45,6 +45,7 @@
     "remix-lib": "0.4.13",
     "remix-simulator": "0.1.9-alpha.6",
     "remix-solidity": "0.3.16",
+    "signale": "^1.4.0",
     "web3": "1.0.0-beta.36",
     "winston": "^3.0.0"
   },