diff --git a/package-lock.json b/package-lock.json
index aaec482..6a2e756 100644
--- a/package-lock.json
+++ b/package-lock.json
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@@ -202,6 +215,16 @@
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@@ -348,6 +371,20 @@
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@@ -1604,16 +1804,81 @@
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-            "yargs": "^4.7.1"
+            "require-from-string": "^2.0.0",
+            "semver": "^5.5.0",
+            "yargs": "^11.0.0"
+          }
+        },
+        "string-width": {
+          "version": "2.1.1",
+          "resolved": "https://registry.npmjs.org/string-width/-/string-width-2.1.1.tgz",
+          "integrity": "sha512-nOqH59deCq9SRHlxq1Aw85Jnt4w6KvLKqWVik6oA9ZklXLNIOlqg4F2yrT1MVaTjAqvVwdfeZ7w7aCvJD7ugkw==",
+          "requires": {
+            "is-fullwidth-code-point": "^2.0.0",
+            "strip-ansi": "^4.0.0"
+          }
+        },
+        "strip-ansi": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-4.0.0.tgz",
+          "integrity": "sha1-qEeQIusaw2iocTibY1JixQXuNo8=",
+          "requires": {
+            "ansi-regex": "^3.0.0"
+          }
+        },
+        "which-module": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/which-module/-/which-module-2.0.0.tgz",
+          "integrity": "sha1-2e8H3Od7mQK4o6j6SzHD4/fm6Ho="
+        },
+        "yargs": {
+          "version": "11.1.0",
+          "resolved": "https://registry.npmjs.org/yargs/-/yargs-11.1.0.tgz",
+          "integrity": "sha512-NwW69J42EsCSanF8kyn5upxvjp5ds+t3+udGBeTbFnERA+lF541DDpMawzo4z6W/QrzNM18D+BPMiOBibnFV5A==",
+          "requires": {
+            "cliui": "^4.0.0",
+            "decamelize": "^1.1.1",
+            "find-up": "^2.1.0",
+            "get-caller-file": "^1.0.1",
+            "os-locale": "^2.0.0",
+            "require-directory": "^2.1.1",
+            "require-main-filename": "^1.0.1",
+            "set-blocking": "^2.0.0",
+            "string-width": "^2.0.0",
+            "which-module": "^2.0.0",
+            "y18n": "^3.2.1",
+            "yargs-parser": "^9.0.2"
+          }
+        },
+        "yargs-parser": {
+          "version": "9.0.2",
+          "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-9.0.2.tgz",
+          "integrity": "sha1-nM9qQ0YP5O1Aqbto9I1DuKaMwHc=",
+          "requires": {
+            "camelcase": "^4.1.0"
           }
         }
       }
@@ -1721,7 +1986,6 @@
       "version": "1.3.1",
       "resolved": "https://registry.npmjs.org/which/-/which-1.3.1.tgz",
       "integrity": "sha1-pFBD1U9YBTFtqNYvn1CRjT2nCwo=",
-      "dev": true,
       "requires": {
         "isexe": "^2.0.0"
       }
@@ -1773,6 +2037,11 @@
       "resolved": "https://registry.npmjs.org/y18n/-/y18n-3.2.1.tgz",
       "integrity": "sha1-bRX7qITAhnnA136I53WegR4H+kE="
     },
+    "yallist": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/yallist/-/yallist-2.1.2.tgz",
+      "integrity": "sha1-HBH5IY8HYImkfdUS+TxmmaaoHVI="
+    },
     "yargs": {
       "version": "4.8.1",
       "resolved": "http://registry.npmjs.org/yargs/-/yargs-4.8.1.tgz",
diff --git a/package.json b/package.json
index c13b5ef..5e700cb 100644
--- a/package.json
+++ b/package.json
@@ -13,7 +13,7 @@
     "request": "^2.87.0",
     "solc": "^0.4.25",
     "solidity-docgen": "^0.1.0",
-    "truffle": "5.0.0-beta.1",
+    "truffle": "5.0.5",
     "truffle-hdwallet-provider": "^1.0.0-web3one.1"
   },
   "devDependencies": {
diff --git a/yarn.lock b/yarn.lock
index f18ee8a..3a02627 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -32,6 +32,16 @@ ansi-regex@^2.0.0:
   resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-2.1.1.tgz#c3b33ab5ee360d86e0e628f0468ae7ef27d654df"
   integrity sha1-w7M6te42DYbg5ijwRorn7yfWVN8=
 
+ansi-regex@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-3.0.0.tgz#ed0317c322064f79466c02966bddb605ab37d998"
+  integrity sha1-7QMXwyIGT3lGbAKWa922Bas32Zg=
+
+app-module-path@^2.2.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/app-module-path/-/app-module-path-2.2.0.tgz#641aa55dfb7d6a6f0a8141c4b9c0aa50b6c24dd5"
+  integrity sha1-ZBqlXft9am8KgUHEucCqULbCTdU=
+
 argparse@^1.0.7:
   version "1.0.10"
   resolved "https://registry.yarnpkg.com/argparse/-/argparse-1.0.10.tgz#bcd6791ea5ae09725e17e5ad988134cd40b3d911"
@@ -99,6 +109,13 @@ bignumber.js@^7.2.1:
   version "2.0.7"
   resolved "git+https://github.com/debris/bignumber.js.git#94d7146671b9719e00a09c29b01a691bc85048c2"
 
+bindings@^1.2.1:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/bindings/-/bindings-1.4.0.tgz#909efa49f2ebe07ecd3cb136778f665052040127"
+  integrity sha512-7znEVX22Djn+nYjxCWKDne0RRloa9XfYa84yk3s+HkE3LpDYZmhArYr9O9huBoHY3/oXispx5LorIX7Sl2CgSQ==
+  dependencies:
+    file-uri-to-path "1.0.0"
+
 brace-expansion@^1.1.7:
   version "1.1.11"
   resolved "https://registry.yarnpkg.com/brace-expansion/-/brace-expansion-1.1.11.tgz#3c7fcbf529d87226f3d2f52b966ff5271eb441dd"
@@ -139,6 +156,11 @@ camelcase@^3.0.0:
   resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-3.0.0.tgz#32fc4b9fcdaf845fcdf7e73bb97cac2261f0ab0a"
   integrity sha1-MvxLn82vhF/N9+c7uXysImHwqwo=
 
+camelcase@^4.1.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-4.1.0.tgz#d545635be1e33c542649c69173e5de6acfae34dd"
+  integrity sha1-1UVjW+HjPFQmScaRc+Xeas+uNN0=
+
 caseless@~0.12.0:
   version "0.12.0"
   resolved "https://registry.yarnpkg.com/caseless/-/caseless-0.12.0.tgz#1b681c21ff84033c826543090689420d187151dc"
@@ -153,6 +175,15 @@ cliui@^3.2.0:
     strip-ansi "^3.0.1"
     wrap-ansi "^2.0.0"
 
+cliui@^4.0.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/cliui/-/cliui-4.1.0.tgz#348422dbe82d800b3022eef4f6ac10bf2e4d1b49"
+  integrity sha512-4FG+RSG9DL7uEwRUZXZn3SS34DiDPfzP0VOiEwtUWlE+AR2EIg+hSyvrIgUUfhdgR/UkAeW2QHgeP+hWrXs7jQ==
+  dependencies:
+    string-width "^2.1.1"
+    strip-ansi "^4.0.0"
+    wrap-ansi "^2.0.0"
+
 code-point-at@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/code-point-at/-/code-point-at-1.1.0.tgz#0d070b4d043a5bea33a2f1a40e2edb3d9a4ccf77"
@@ -207,6 +238,15 @@ coveralls@^3.0.2:
     minimist "^1.2.0"
     request "^2.85.0"
 
+cross-spawn@^5.0.1:
+  version "5.1.0"
+  resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-5.1.0.tgz#e8bd0efee58fcff6f8f94510a0a554bbfa235449"
+  integrity sha1-6L0O/uWPz/b4+UUQoKVUu/ojVEk=
+  dependencies:
+    lru-cache "^4.0.1"
+    shebang-command "^1.2.0"
+    which "^1.2.9"
+
 crypto-js@^3.1.4:
   version "3.1.8"
   resolved "https://registry.yarnpkg.com/crypto-js/-/crypto-js-3.1.8.tgz#715f070bf6014f2ae992a98b3929258b713f08d5"
@@ -315,6 +355,19 @@ ethereumjs-testrpc-sc@6.1.6:
   dependencies:
     source-map-support "^0.5.3"
 
+execa@^0.7.0:
+  version "0.7.0"
+  resolved "https://registry.yarnpkg.com/execa/-/execa-0.7.0.tgz#944becd34cc41ee32a63a9faf27ad5a65fc59777"
+  integrity sha1-lEvs00zEHuMqY6n68nrVpl/Fl3c=
+  dependencies:
+    cross-spawn "^5.0.1"
+    get-stream "^3.0.0"
+    is-stream "^1.1.0"
+    npm-run-path "^2.0.0"
+    p-finally "^1.0.0"
+    signal-exit "^3.0.0"
+    strip-eof "^1.0.0"
+
 extend@~3.0.2:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/extend/-/extend-3.0.2.tgz#f8b1136b4071fbd8eb140aff858b1019ec2915fa"
@@ -345,6 +398,11 @@ fast-levenshtein@~2.0.4:
   resolved "https://registry.yarnpkg.com/fast-levenshtein/-/fast-levenshtein-2.0.6.tgz#3d8a5c66883a16a30ca8643e851f19baa7797917"
   integrity sha1-PYpcZog6FqMMqGQ+hR8Zuqd5eRc=
 
+file-uri-to-path@1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/file-uri-to-path/-/file-uri-to-path-1.0.0.tgz#553a7b8446ff6f684359c445f1e37a05dacc33dd"
+  integrity sha512-0Zt+s3L7Vf1biwWZ29aARiVYLx7iMGnEUl9x33fbB/j3jR81u/O2LbqK+Bm1CDSNDKVtJ/YjwY7TUd5SkeLQLw==
+
 find-up@^1.0.0:
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/find-up/-/find-up-1.1.2.tgz#6b2e9822b1a2ce0a60ab64d610eccad53cb24d0f"
@@ -353,6 +411,13 @@ find-up@^1.0.0:
     path-exists "^2.0.0"
     pinkie-promise "^2.0.0"
 
+find-up@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/find-up/-/find-up-2.1.0.tgz#45d1b7e506c717ddd482775a2b77920a3c0c57a7"
+  integrity sha1-RdG35QbHF93UgndaK3eSCjwMV6c=
+  dependencies:
+    locate-path "^2.0.0"
+
 forever-agent@~0.6.1:
   version "0.6.1"
   resolved "https://registry.yarnpkg.com/forever-agent/-/forever-agent-0.6.1.tgz#fbc71f0c41adeb37f96c577ad1ed42d8fdacca91"
@@ -395,6 +460,11 @@ get-caller-file@^1.0.1:
   resolved "https://registry.yarnpkg.com/get-caller-file/-/get-caller-file-1.0.3.tgz#f978fa4c90d1dfe7ff2d6beda2a515e713bdcf4a"
   integrity sha512-3t6rVToeoZfYSGd8YoLFR2DJkiQrIiUrGcjvFX2mDw3bn6k2OtwHN0TNCLbBO+w8qTvimhDkv+LSscbJY1vE6w==
 
+get-stream@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/get-stream/-/get-stream-3.0.0.tgz#8e943d1358dc37555054ecbe2edb05aa174ede14"
+  integrity sha1-jpQ9E1jcN1VQVOy+LtsFqhdO3hQ=
+
 getpass@^0.1.1:
   version "0.1.7"
   resolved "https://registry.yarnpkg.com/getpass/-/getpass-0.1.7.tgz#5eff8e3e684d569ae4cb2b1282604e8ba62149fa"
@@ -518,7 +588,7 @@ inflight@^1.0.4:
     once "^1.3.0"
     wrappy "1"
 
-inherits@2:
+inherits@2, inherits@^2.0.3:
   version "2.0.3"
   resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.3.tgz#633c2c83e3da42a502f52466022480f4208261de"
   integrity sha1-Yzwsg+PaQqUC9SRmAiSA9CCCYd4=
@@ -552,6 +622,16 @@ is-fullwidth-code-point@^1.0.0:
   dependencies:
     number-is-nan "^1.0.0"
 
+is-fullwidth-code-point@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/is-fullwidth-code-point/-/is-fullwidth-code-point-2.0.0.tgz#a3b30a5c4f199183167aaab93beefae3ddfb654f"
+  integrity sha1-o7MKXE8ZkYMWeqq5O+764937ZU8=
+
+is-stream@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/is-stream/-/is-stream-1.1.0.tgz#12d4a3dd4e68e0b79ceb8dbc84173ae80d91ca44"
+  integrity sha1-EtSj3U5o4Lec6428hBc66A2RykQ=
+
 is-typedarray@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/is-typedarray/-/is-typedarray-1.0.0.tgz#e479c80858df0c1b11ddda6940f96011fcda4a9a"
@@ -647,6 +727,16 @@ jsprim@^1.2.2:
     json-schema "0.2.3"
     verror "1.10.0"
 
+keccak@^1.0.2:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/keccak/-/keccak-1.4.0.tgz#572f8a6dbee8e7b3aa421550f9e6408ca2186f80"
+  integrity sha512-eZVaCpblK5formjPjeTBik7TAg+pqnDrMHIffSvi9Lh7PQgM1+hSzakUeZFCk9DVVG0dacZJuaz2ntwlzZUIBw==
+  dependencies:
+    bindings "^1.2.1"
+    inherits "^2.0.3"
+    nan "^2.2.1"
+    safe-buffer "^5.1.0"
+
 keccakjs@^0.2.1:
   version "0.2.1"
   resolved "https://registry.yarnpkg.com/keccakjs/-/keccakjs-0.2.1.tgz#1d633af907ef305bbf9f2fa616d56c44561dfa4d"
@@ -693,6 +783,14 @@ load-json-file@^1.0.0:
     pinkie-promise "^2.0.0"
     strip-bom "^2.0.0"
 
+locate-path@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/locate-path/-/locate-path-2.0.0.tgz#2b568b265eec944c6d9c0de9c3dbbbca0354cd8e"
+  integrity sha1-K1aLJl7slExtnA3pw9u7ygNUzY4=
+  dependencies:
+    p-locate "^2.0.0"
+    path-exists "^3.0.0"
+
 lodash.assign@^4.0.3, lodash.assign@^4.0.6:
   version "4.2.0"
   resolved "https://registry.yarnpkg.com/lodash.assign/-/lodash.assign-4.2.0.tgz#0d99f3ccd7a6d261d19bdaeb9245005d285808e7"
@@ -715,6 +813,21 @@ loose-envify@^1.1.0, loose-envify@^1.3.1:
   dependencies:
     js-tokens "^3.0.0 || ^4.0.0"
 
+lru-cache@^4.0.1:
+  version "4.1.5"
+  resolved "https://registry.yarnpkg.com/lru-cache/-/lru-cache-4.1.5.tgz#8bbe50ea85bed59bc9e33dcab8235ee9bcf443cd"
+  integrity sha512-sWZlbEP2OsHNkXrMl5GYk/jKk70MBng6UU4YI/qGDYbgf6YbP4EvmqISbXCoJiRKs+1bSpFHVgQxvJ17F2li5g==
+  dependencies:
+    pseudomap "^1.0.2"
+    yallist "^2.1.2"
+
+mem@^1.1.0:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/mem/-/mem-1.1.0.tgz#5edd52b485ca1d900fe64895505399a0dfa45f76"
+  integrity sha1-Xt1StIXKHZAP5kiVUFOZoN+kX3Y=
+  dependencies:
+    mimic-fn "^1.0.0"
+
 memorystream@^0.3.1:
   version "0.3.1"
   resolved "https://registry.yarnpkg.com/memorystream/-/memorystream-0.3.1.tgz#86d7090b30ce455d63fbae12dda51a47ddcaf9b2"
@@ -732,6 +845,11 @@ mime-types@^2.1.12, mime-types@~2.1.19:
   dependencies:
     mime-db "~1.37.0"
 
+mimic-fn@^1.0.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/mimic-fn/-/mimic-fn-1.2.0.tgz#820c86a39334640e99516928bd03fca88057d022"
+  integrity sha512-jf84uxzwiuiIVKiOLpfYk7N46TSy8ubTonmneY9vrpHNAnp0QBt2BxWV9dO3/j+BoVAb+a5G6YDPW3M5HOdMWQ==
+
 "minimatch@2 || 3", minimatch@3.0.4, minimatch@^3.0.4:
   version "3.0.4"
   resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-3.0.4.tgz#5166e286457f03306064be5497e8dbb0c3d32083"
@@ -809,6 +927,11 @@ nan@2.10.0:
   resolved "https://registry.yarnpkg.com/nan/-/nan-2.10.0.tgz#96d0cd610ebd58d4b4de9cc0c6828cda99c7548f"
   integrity sha512-bAdJv7fBLhWC+/Bls0Oza+mvTaNQtP+1RyhhhvD95pgUJz6XM5IzgmxOkItJ9tkoCiplvAnXI1tNmmUD/eScyA==
 
+nan@^2.2.1:
+  version "2.12.1"
+  resolved "https://registry.yarnpkg.com/nan/-/nan-2.12.1.tgz#7b1aa193e9aa86057e3c7bbd0ac448e770925552"
+  integrity sha512-JY7V6lRkStKcKTvHO5NVSQRv+RV+FIL5pvDoLiAtSL9pKlC5x9PKQcZDsq7m4FO4d57mkhC6Z+QhAh3Jdk5JFw==
+
 nopt@3.x:
   version "3.0.6"
   resolved "https://registry.yarnpkg.com/nopt/-/nopt-3.0.6.tgz#c6465dbf08abcd4db359317f79ac68a646b28ff9"
@@ -826,6 +949,13 @@ normalize-package-data@^2.3.2:
     semver "2 || 3 || 4 || 5"
     validate-npm-package-license "^3.0.1"
 
+npm-run-path@^2.0.0:
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/npm-run-path/-/npm-run-path-2.0.2.tgz#35a9232dfa35d7067b4cb2ddf2357b1871536c5f"
+  integrity sha1-NakjLfo11wZ7TLLd8jV7GHFTbF8=
+  dependencies:
+    path-key "^2.0.0"
+
 number-is-nan@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/number-is-nan/-/number-is-nan-1.0.1.tgz#097b602b53422a522c1afb8790318336941a011d"
@@ -880,6 +1010,39 @@ os-locale@^1.4.0:
   dependencies:
     lcid "^1.0.0"
 
+os-locale@^2.0.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/os-locale/-/os-locale-2.1.0.tgz#42bc2900a6b5b8bd17376c8e882b65afccf24bf2"
+  integrity sha512-3sslG3zJbEYcaC4YVAvDorjGxc7tv6KVATnLPZONiljsUncvihe9BQoVCEs0RZ1kmf4Hk9OBqlZfJZWI4GanKA==
+  dependencies:
+    execa "^0.7.0"
+    lcid "^1.0.0"
+    mem "^1.1.0"
+
+p-finally@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/p-finally/-/p-finally-1.0.0.tgz#3fbcfb15b899a44123b34b6dcc18b724336a2cae"
+  integrity sha1-P7z7FbiZpEEjs0ttzBi3JDNqLK4=
+
+p-limit@^1.1.0:
+  version "1.3.0"
+  resolved "https://registry.yarnpkg.com/p-limit/-/p-limit-1.3.0.tgz#b86bd5f0c25690911c7590fcbfc2010d54b3ccb8"
+  integrity sha512-vvcXsLAJ9Dr5rQOPk7toZQZJApBl2K4J6dANSsEuh6QI41JYcsS/qhTGa9ErIUUgK3WNQoJYvylxvjqmiqEA9Q==
+  dependencies:
+    p-try "^1.0.0"
+
+p-locate@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/p-locate/-/p-locate-2.0.0.tgz#20a0103b222a70c8fd39cc2e580680f3dde5ec43"
+  integrity sha1-IKAQOyIqcMj9OcwuWAaA893l7EM=
+  dependencies:
+    p-limit "^1.1.0"
+
+p-try@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/p-try/-/p-try-1.0.0.tgz#cbc79cdbaf8fd4228e13f621f2b1a237c1b207b3"
+  integrity sha1-y8ec26+P1CKOE/Yh8rGiN8GyB7M=
+
 parse-json@^2.2.0:
   version "2.2.0"
   resolved "https://registry.yarnpkg.com/parse-json/-/parse-json-2.2.0.tgz#f480f40434ef80741f8469099f8dea18f55a4dc9"
@@ -894,11 +1057,21 @@ path-exists@^2.0.0:
   dependencies:
     pinkie-promise "^2.0.0"
 
+path-exists@^3.0.0:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/path-exists/-/path-exists-3.0.0.tgz#ce0ebeaa5f78cb18925ea7d810d7b59b010fd515"
+  integrity sha1-zg6+ql94yxiSXqfYENe1mwEP1RU=
+
 path-is-absolute@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/path-is-absolute/-/path-is-absolute-1.0.1.tgz#174b9268735534ffbc7ace6bf53a5a9e1b5c5f5f"
   integrity sha1-F0uSaHNVNP+8es5r9TpanhtcX18=
 
+path-key@^2.0.0:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/path-key/-/path-key-2.0.1.tgz#411cadb574c5a140d3a4b1910d40d80cc9f40b40"
+  integrity sha1-QRyttXTFoUDTpLGRDUDYDMn0C0A=
+
 path-parse@^1.0.5:
   version "1.0.6"
   resolved "https://registry.yarnpkg.com/path-parse/-/path-parse-1.0.6.tgz#d62dbb5679405d72c4737ec58600e9ddcf06d24c"
@@ -953,6 +1126,11 @@ prop-types@^15.6.2:
     loose-envify "^1.3.1"
     object-assign "^4.1.1"
 
+pseudomap@^1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/pseudomap/-/pseudomap-1.0.2.tgz#f052a28da70e618917ef0a8ac34c1ae5a68286b3"
+  integrity sha1-8FKijacOYYkX7wqKw0wa5aaChrM=
+
 psl@^1.1.24:
   version "1.1.29"
   resolved "https://registry.yarnpkg.com/psl/-/psl-1.1.29.tgz#60f580d360170bb722a797cc704411e6da850c67"
@@ -1067,6 +1245,11 @@ require-from-string@^1.1.0:
   resolved "https://registry.yarnpkg.com/require-from-string/-/require-from-string-1.2.1.tgz#529c9ccef27380adfec9a2f965b649bbee636418"
   integrity sha1-UpyczvJzgK3+yaL5ZbZJu+5jZBg=
 
+require-from-string@^2.0.0:
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/require-from-string/-/require-from-string-2.0.2.tgz#89a7fdd938261267318eafe14f9c32e598c36909"
+  integrity sha512-Xf0nWe6RseziFMu+Ap9biiUbmplq6S9/p+7w7YXP/JBHhrUDDUhwa+vANyubuqfZWTveU//DYVGsDG7RKL/vEw==
+
 require-main-filename@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/require-main-filename/-/require-main-filename-1.0.1.tgz#97f717b69d48784f5f526a6c5aa8ffdda055a4d1"
@@ -1096,7 +1279,7 @@ rimraf@^2.2.8:
   dependencies:
     glob "^7.0.5"
 
-safe-buffer@^5.0.1, safe-buffer@^5.1.2:
+safe-buffer@^5.0.1, safe-buffer@^5.1.0, safe-buffer@^5.1.2:
   version "5.1.2"
   resolved "https://registry.yarnpkg.com/safe-buffer/-/safe-buffer-5.1.2.tgz#991ec69d296e0313747d59bdfd2b745c35f8828d"
   integrity sha512-Gd2UZBJDkXlY7GbJxfsE8/nvKkUEU1G38c1siN6QP6a9PT9MmHB8GnpscSmMJSoF8LOIrt8ud/wPtojys4G6+g==
@@ -1114,7 +1297,7 @@ scheduler@^0.11.0:
     loose-envify "^1.1.0"
     object-assign "^4.1.1"
 
-"semver@2 || 3 || 4 || 5", semver@^5.3.0:
+"semver@2 || 3 || 4 || 5", semver@^5.3.0, semver@^5.5.0:
   version "5.6.0"
   resolved "https://registry.yarnpkg.com/semver/-/semver-5.6.0.tgz#7e74256fbaa49c75aa7c7a205cc22799cac80004"
   integrity sha512-RS9R6R35NYgQn++fkDWaOmqGoj4Ek9gGs+DPxNUZKuwE183xjJroKvyo1IzVFeXvUrvmALy6FWD5xrdJT25gMg==
@@ -1131,6 +1314,18 @@ sha3@^1.1.0:
   dependencies:
     nan "2.10.0"
 
+shebang-command@^1.2.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/shebang-command/-/shebang-command-1.2.0.tgz#44aac65b695b03398968c39f363fee5deafdf1ea"
+  integrity sha1-RKrGW2lbAzmJaMOfNj/uXer98eo=
+  dependencies:
+    shebang-regex "^1.0.0"
+
+shebang-regex@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/shebang-regex/-/shebang-regex-1.0.0.tgz#da42f49740c0b42db2ca9728571cb190c98efea3"
+  integrity sha1-2kL0l0DAtC2yypcoVxyxkMmO/qM=
+
 shelljs@^0.7.4:
   version "0.7.8"
   resolved "https://registry.yarnpkg.com/shelljs/-/shelljs-0.7.8.tgz#decbcf874b0d1e5fb72e14b164a9683048e9acb3"
@@ -1149,12 +1344,29 @@ shelljs@^0.8.1:
     interpret "^1.0.0"
     rechoir "^0.6.2"
 
+signal-exit@^3.0.0:
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/signal-exit/-/signal-exit-3.0.2.tgz#b5fdc08f1287ea1178628e415e25132b73646c6d"
+  integrity sha1-tf3AjxKH6hF4Yo5BXiUTK3NkbG0=
+
 sol-explore@^1.6.2:
   version "1.6.2"
   resolved "https://registry.yarnpkg.com/sol-explore/-/sol-explore-1.6.2.tgz#43ae8c419fd3ac056a05f8a9d1fb1022cd41ecc2"
   integrity sha1-Q66MQZ/TrAVqBfip0fsQIs1B7MI=
 
-solc@0.4.25, solc@^0.4.25:
+solc@0.5.0:
+  version "0.5.0"
+  resolved "https://registry.yarnpkg.com/solc/-/solc-0.5.0.tgz#2deb2ae992acac3afb909f85c38d00f01dcb335e"
+  integrity sha512-mdLHDl9WeYrN+FIKcMc9PlPfnA9DG9ur5QpCDKcv6VC4RINAsTF4EMuXMZMKoQTvZhtLyJIVH/BZ+KU830Z8Xg==
+  dependencies:
+    fs-extra "^0.30.0"
+    keccak "^1.0.2"
+    memorystream "^0.3.1"
+    require-from-string "^2.0.0"
+    semver "^5.5.0"
+    yargs "^11.0.0"
+
+solc@^0.4.25:
   version "0.4.25"
   resolved "https://registry.yarnpkg.com/solc/-/solc-0.4.25.tgz#06b8321f7112d95b4b903639b1138a4d292f5faa"
   integrity sha512-jU1YygRVy6zatgXrLY2rRm7HW1d7a8CkkEgNJwvH2VLpWhMFsMdWcJn6kUqZwcSz/Vm+w89dy7Z/aB5p6AFTrg==
@@ -1278,6 +1490,14 @@ string-width@^1.0.1:
     is-fullwidth-code-point "^1.0.0"
     strip-ansi "^3.0.0"
 
+string-width@^2.0.0, string-width@^2.1.1:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/string-width/-/string-width-2.1.1.tgz#ab93f27a8dc13d28cac815c462143a6d9012ae9e"
+  integrity sha512-nOqH59deCq9SRHlxq1Aw85Jnt4w6KvLKqWVik6oA9ZklXLNIOlqg4F2yrT1MVaTjAqvVwdfeZ7w7aCvJD7ugkw==
+  dependencies:
+    is-fullwidth-code-point "^2.0.0"
+    strip-ansi "^4.0.0"
+
 strip-ansi@^3.0.0, strip-ansi@^3.0.1:
   version "3.0.1"
   resolved "https://registry.yarnpkg.com/strip-ansi/-/strip-ansi-3.0.1.tgz#6a385fb8853d952d5ff05d0e8aaf94278dc63dcf"
@@ -1285,6 +1505,13 @@ strip-ansi@^3.0.0, strip-ansi@^3.0.1:
   dependencies:
     ansi-regex "^2.0.0"
 
+strip-ansi@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/strip-ansi/-/strip-ansi-4.0.0.tgz#a8479022eb1ac368a871389b635262c505ee368f"
+  integrity sha1-qEeQIusaw2iocTibY1JixQXuNo8=
+  dependencies:
+    ansi-regex "^3.0.0"
+
 strip-bom@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/strip-bom/-/strip-bom-2.0.0.tgz#6219a85616520491f35788bdbf1447a99c7e6b0e"
@@ -1292,6 +1519,11 @@ strip-bom@^2.0.0:
   dependencies:
     is-utf8 "^0.2.0"
 
+strip-eof@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/strip-eof/-/strip-eof-1.0.0.tgz#bb43ff5598a6eb05d89b59fcd129c983313606bf"
+  integrity sha1-u0P/VZim6wXYm1n80SnJgzE2Br8=
+
 supports-color@4.4.0:
   version "4.4.0"
   resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-4.4.0.tgz#883f7ddabc165142b2a61427f3352ded195d1a3e"
@@ -1331,14 +1563,15 @@ truffle-hdwallet-provider@^1.0.0-web3one.1:
   resolved "https://registry.yarnpkg.com/truffle-hdwallet-provider/-/truffle-hdwallet-provider-1.0.0-web3one.2.tgz#e7f3f2a5c41bb80a78c19957d5590283e6d7ad11"
   integrity sha512-rFrGIsbTyeieSsYG/mxmQN+xH6eD/45H2q3bY7jnlex1ICWReh+gXSeIXl1MH9glFt2ESZ0gFJPZDzjfGpxUdg==
 
-truffle@5.0.0-beta.1:
-  version "5.0.0-beta.1"
-  resolved "https://registry.yarnpkg.com/truffle/-/truffle-5.0.0-beta.1.tgz#2ac40eb6128c1fa66b76c63567185e8fca17950b"
-  integrity sha512-U9vNwUAX0kb+pgpUWsWDFQeU2XeCHYm4swVxQdRi37mDQCOedEVgiE+Lr87LNQMAIuAY+8sG/9KF7HwVks0ncQ==
+truffle@5.0.5:
+  version "5.0.5"
+  resolved "https://registry.yarnpkg.com/truffle/-/truffle-5.0.5.tgz#428b5e776bd0bef0272874d636a2607d1fc7ede8"
+  integrity sha512-YKAfHvq3C5hGCc+S+14FNDM8iZPeta9McocKSAkYBxDTiRfyT6yeDrHmSNEU7fzNAc7jFSlwhY7Cs5bXUR3RKg==
   dependencies:
+    app-module-path "^2.2.0"
     mocha "^4.1.0"
     original-require "1.0.1"
-    solc "0.4.25"
+    solc "0.5.0"
 
 tunnel-agent@^0.6.0:
   version "0.6.0"
@@ -1417,7 +1650,12 @@ which-module@^1.0.0:
   resolved "https://registry.yarnpkg.com/which-module/-/which-module-1.0.0.tgz#bba63ca861948994ff307736089e3b96026c2a4f"
   integrity sha1-u6Y8qGGUiZT/MHc2CJ47lgJsKk8=
 
-which@^1.1.1:
+which-module@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/which-module/-/which-module-2.0.0.tgz#d9ef07dce77b9902b8a3a8fa4b31c3e3f7e6e87a"
+  integrity sha1-2e8H3Od7mQK4o6j6SzHD4/fm6Ho=
+
+which@^1.1.1, which@^1.2.9:
   version "1.3.1"
   resolved "https://registry.yarnpkg.com/which/-/which-1.3.1.tgz#a45043d54f5805316da8d62f9f50918d3da70b0a"
   integrity sha512-HxJdYWq1MTIQbJ3nw0cqssHoTNU267KlrDuGZ1WYlxDStUtKUhOaJmh112/TZmHxxUfuJqPXSOm7tDyas0OSIQ==
@@ -1467,6 +1705,11 @@ y18n@^3.2.1:
   resolved "https://registry.yarnpkg.com/y18n/-/y18n-3.2.1.tgz#6d15fba884c08679c0d77e88e7759e811e07fa41"
   integrity sha1-bRX7qITAhnnA136I53WegR4H+kE=
 
+yallist@^2.1.2:
+  version "2.1.2"
+  resolved "https://registry.yarnpkg.com/yallist/-/yallist-2.1.2.tgz#1c11f9218f076089a47dd512f93c6699a6a81d52"
+  integrity sha1-HBH5IY8HYImkfdUS+TxmmaaoHVI=
+
 yargs-parser@^2.4.1:
   version "2.4.1"
   resolved "https://registry.yarnpkg.com/yargs-parser/-/yargs-parser-2.4.1.tgz#85568de3cf150ff49fa51825f03a8c880ddcc5c4"
@@ -1475,6 +1718,31 @@ yargs-parser@^2.4.1:
     camelcase "^3.0.0"
     lodash.assign "^4.0.6"
 
+yargs-parser@^9.0.2:
+  version "9.0.2"
+  resolved "https://registry.yarnpkg.com/yargs-parser/-/yargs-parser-9.0.2.tgz#9ccf6a43460fe4ed40a9bb68f48d43b8a68cc077"
+  integrity sha1-nM9qQ0YP5O1Aqbto9I1DuKaMwHc=
+  dependencies:
+    camelcase "^4.1.0"
+
+yargs@^11.0.0:
+  version "11.1.0"
+  resolved "https://registry.yarnpkg.com/yargs/-/yargs-11.1.0.tgz#90b869934ed6e871115ea2ff58b03f4724ed2d77"
+  integrity sha512-NwW69J42EsCSanF8kyn5upxvjp5ds+t3+udGBeTbFnERA+lF541DDpMawzo4z6W/QrzNM18D+BPMiOBibnFV5A==
+  dependencies:
+    cliui "^4.0.0"
+    decamelize "^1.1.1"
+    find-up "^2.1.0"
+    get-caller-file "^1.0.1"
+    os-locale "^2.0.0"
+    require-directory "^2.1.1"
+    require-main-filename "^1.0.1"
+    set-blocking "^2.0.0"
+    string-width "^2.0.0"
+    which-module "^2.0.0"
+    y18n "^3.2.1"
+    yargs-parser "^9.0.2"
+
 yargs@^4.6.0, yargs@^4.7.1:
   version "4.8.1"
   resolved "https://registry.yarnpkg.com/yargs/-/yargs-4.8.1.tgz#c0c42924ca4aaa6b0e6da1739dfb216439f9ddc0"