diff --git a/yarn.lock b/yarn.lock
index 44d771d..f75454a 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -1876,11 +1876,6 @@ async-foreach@^0.1.3:
   resolved "https://registry.yarnpkg.com/async-foreach/-/async-foreach-0.1.3.tgz#36121f845c0578172de419a97dbeb1d16ec34542"
   integrity sha1-NhIfhFwFeBct5Bmpfb6x0W7DRUI=
 
-async-foreach@^0.1.3:
-  version "0.1.3"
-  resolved "https://registry.yarnpkg.com/async-foreach/-/async-foreach-0.1.3.tgz#36121f845c0578172de419a97dbeb1d16ec34542"
-  integrity sha1-NhIfhFwFeBct5Bmpfb6x0W7DRUI=
-
 async-limiter@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/async-limiter/-/async-limiter-1.0.0.tgz#78faed8c3d074ab81f22b4e985d79e8738f720f8"
@@ -2136,9 +2131,10 @@ bluebird@^3.5.5:
   resolved "https://registry.yarnpkg.com/bluebird/-/bluebird-3.5.5.tgz#a8d0afd73251effbbd5fe384a77d73003c17a71f"
   integrity sha512-5am6HnnfN+urzt4yfg7IgTbotDjIT/u8AJpEt0sIU9FtXfVeezXAPKswrG+xKUCOYAINpSdgZVDU6QFh+cuH3w==
 
-bn.js@^4.0.0, bn.js@^4.1.0, bn.js@^4.1.1, bn.js@^4.4.0:
-  version "4.11.8"
-  resolved "https://registry.yarnpkg.com/bn.js/-/bn.js-4.11.8.tgz#2cde09eb5ee341f484746bb0309b3253b1b1442f"
+bn.js@^4.0.0, bn.js@^4.1.0, bn.js@^4.1.1, bn.js@^4.11.9:
+  version "4.12.0"
+  resolved "https://registry.yarnpkg.com/bn.js/-/bn.js-4.12.0.tgz#775b3f278efbb9718eec7361f483fb36fbbfea88"
+  integrity sha512-c98Bf3tPniI+scsdk237ku1Dc3ujXQTSgyiPUDEOe7tRkhrqridvh8klBv0HCEso1OLOYcHuCv/cS6DNxKH+ZA==
 
 body-parser@1.18.2:
   version "1.18.2"
@@ -2211,9 +2207,10 @@ braces@^3.0.1:
   dependencies:
     fill-range "^7.0.1"
 
-brorand@^1.0.1:
+brorand@^1.0.1, brorand@^1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/brorand/-/brorand-1.1.0.tgz#12c25efe40a45e3c323eb8675a0a0ce57b22371f"
+  integrity sha1-EsJe/kCkXjwyPrhnWgoM5XsiNx8=
 
 browser-process-hrtime@^0.1.2:
   version "0.1.2"
@@ -3627,16 +3624,17 @@ elegant-spinner@^1.0.1:
   integrity sha1-2wQ1IcldfjA/2PNFvtwzSc+wcp4=
 
 elliptic@^6.0.0:
-  version "6.4.0"
-  resolved "https://registry.yarnpkg.com/elliptic/-/elliptic-6.4.0.tgz#cac9af8762c85836187003c8dfe193e5e2eae5df"
+  version "6.5.4"
+  resolved "https://registry.yarnpkg.com/elliptic/-/elliptic-6.5.4.tgz#da37cebd31e79a1367e941b592ed1fbebd58abbb"
+  integrity sha512-iLhC6ULemrljPZb+QutR5TQGB+pdW6KGD5RSegS+8sorOZT+rdQFbsQFJgvN3eRqNALqJer4oQ16YvJHlU8hzQ==
   dependencies:
-    bn.js "^4.4.0"
-    brorand "^1.0.1"
+    bn.js "^4.11.9"
+    brorand "^1.1.0"
     hash.js "^1.0.0"
-    hmac-drbg "^1.0.0"
-    inherits "^2.0.1"
-    minimalistic-assert "^1.0.0"
-    minimalistic-crypto-utils "^1.0.0"
+    hmac-drbg "^1.0.1"
+    inherits "^2.0.4"
+    minimalistic-assert "^1.0.1"
+    minimalistic-crypto-utils "^1.0.1"
 
 emoji-regex@^7.0.1, emoji-regex@^7.0.2:
   version "7.0.3"
@@ -4953,11 +4951,12 @@ hash-base@^3.0.0:
     safe-buffer "^5.0.1"
 
 hash.js@^1.0.0, hash.js@^1.0.3:
-  version "1.1.3"
-  resolved "https://registry.yarnpkg.com/hash.js/-/hash.js-1.1.3.tgz#340dedbe6290187151c1ea1d777a3448935df846"
+  version "1.1.7"
+  resolved "https://registry.yarnpkg.com/hash.js/-/hash.js-1.1.7.tgz#0babca538e8d4ee4a0f8988d68866537a003cf42"
+  integrity sha512-taOaskGt4z4SOANNseOviYDvjEJinIkRgmp7LbKP2YTTmVxWBl87s/uzK9r+44BclBSp2X7K1hqeNfz9JbBeXA==
   dependencies:
     inherits "^2.0.3"
-    minimalistic-assert "^1.0.0"
+    minimalistic-assert "^1.0.1"
 
 he@1.2.x:
   version "1.2.0"
@@ -4981,9 +4980,10 @@ history@^4.9.0:
     tiny-warning "^1.0.0"
     value-equal "^0.4.0"
 
-hmac-drbg@^1.0.0:
+hmac-drbg@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/hmac-drbg/-/hmac-drbg-1.0.1.tgz#d2745701025a6c775a6c545793ed502fc0c649a1"
+  integrity sha1-0nRXAQJabHdabFRXk+1QL8DGSaE=
   dependencies:
     hash.js "^1.0.3"
     minimalistic-assert "^1.0.0"
@@ -5324,7 +5324,7 @@ inflight@^1.0.4:
     once "^1.3.0"
     wrappy "1"
 
-inherits@2, inherits@^2.0.1, inherits@^2.0.3, inherits@~2.0.0, inherits@~2.0.1, inherits@~2.0.3:
+inherits@2, inherits@^2.0.1, inherits@^2.0.3, inherits@^2.0.4, inherits@~2.0.0, inherits@~2.0.1, inherits@~2.0.3:
   version "2.0.4"
   resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.4.tgz#0fa2c64f932917c3433a0ded55363aae37416b7c"
   integrity sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==
@@ -6742,11 +6742,6 @@ log-update@^2.3.0:
     cli-cursor "^2.0.0"
     wrap-ansi "^3.0.1"
 
-lodash@^4.17.15:
-  version "4.17.15"
-  resolved "https://registry.yarnpkg.com/lodash/-/lodash-4.17.15.tgz#b447f6670a0455bbfeedd11392eff330ea097548"
-  integrity sha512-8xOcRHvCjnocdS5cpwXQXVzmmh5e5+saE2QGoeQmbKmRS6J3VQppPOIt0MnmE+4xlZoumy0GPG0D0MVIQbNA1A==
-
 loglevel@^1.4.1:
   version "1.6.1"
   resolved "https://registry.yarnpkg.com/loglevel/-/loglevel-1.6.1.tgz#e0fc95133b6ef276cdc8887cdaf24aa6f156f8fa"
@@ -7011,13 +7006,15 @@ mini-css-extract-plugin@0.5.0:
     schema-utils "^1.0.0"
     webpack-sources "^1.1.0"
 
-minimalistic-assert@^1.0.0:
+minimalistic-assert@^1.0.0, minimalistic-assert@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/minimalistic-assert/-/minimalistic-assert-1.0.1.tgz#2e194de044626d4a10e7f7fbc00ce73e83e4d5c7"
+  integrity sha512-UtJcAD4yEaGtjPezWuO9wC4nwUnVH/8/Im3yEHQP4b67cXlD/Qr9hdITCU1xDbSEXg2XKNaP8jsReV7vQd00/A==
 
-minimalistic-crypto-utils@^1.0.0, minimalistic-crypto-utils@^1.0.1:
+minimalistic-crypto-utils@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/minimalistic-crypto-utils/-/minimalistic-crypto-utils-1.0.1.tgz#f6c00c1c0b082246e5c4d99dfb8c7c083b2b582a"
+  integrity sha1-9sAMHAsIIkblxNmd+4x8CDsrWCo=
 
 minimatch@3.0.4, minimatch@^3.0.4, minimatch@~3.0.2:
   version "3.0.4"