diff --git a/package-lock.json b/package-lock.json
index ffd5b8c..1fdf079 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -3391,6 +3391,11 @@
       "resolved": "https://registry.npmjs.org/compare-versions/-/compare-versions-3.4.0.tgz",
       "integrity": "sha512-tK69D7oNXXqUW3ZNo/z7NXTEz22TCF0pTE+YF9cxvaAM9XnkLo1fV621xCLrRR6aevJlKxExkss0vWqUCUpqdg=="
     },
+    "complex.js": {
+      "version": "2.0.11",
+      "resolved": "https://registry.npmjs.org/complex.js/-/complex.js-2.0.11.tgz",
+      "integrity": "sha512-6IArJLApNtdg1P1dFtn3dnyzoZBEF0MwMnrfF1exSBRpZYoy4yieMkpZhQDC0uwctw48vii0CFVyHfpgZ/DfGw=="
+    },
     "component-emitter": {
       "version": "1.3.0",
       "resolved": "https://registry.npmjs.org/component-emitter/-/component-emitter-1.3.0.tgz",
@@ -3923,6 +3928,11 @@
       "resolved": "https://registry.npmjs.org/decamelize/-/decamelize-1.2.0.tgz",
       "integrity": "sha1-9lNNFRSCabIDUue+4m9QH5oZEpA="
     },
+    "decimal.js": {
+      "version": "10.2.0",
+      "resolved": "https://registry.npmjs.org/decimal.js/-/decimal.js-10.2.0.tgz",
+      "integrity": "sha512-vDPw+rDgn3bZe1+F/pyEwb1oMG2XTlRVgAa6B4KccTEpYgF8w6eQllVbQcfIJnZyvzFtFpxnpGtx8dd7DJp/Rw=="
+    },
     "decode-uri-component": {
       "version": "0.2.0",
       "resolved": "https://registry.npmjs.org/decode-uri-component/-/decode-uri-component-0.2.0.tgz",
@@ -4352,6 +4362,11 @@
       "resolved": "https://registry.npmjs.org/escape-html/-/escape-html-1.0.3.tgz",
       "integrity": "sha1-Aljq5NPQwJdN4cFpGI7wBR0dGYg="
     },
+    "escape-latex": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/escape-latex/-/escape-latex-1.2.0.tgz",
+      "integrity": "sha512-nV5aVWW1K0wEiUIEdZ4erkGGH8mDxGyxSeqPzRNtWP7ataw+/olFObw7hujFWlVjNsaDFw5VZ5NzVSIqRgfTiw=="
+    },
     "escape-string-regexp": {
       "version": "1.0.5",
       "resolved": "https://registry.npmjs.org/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz",
@@ -4810,11 +4825,6 @@
       "resolved": "https://registry.npmjs.org/etag/-/etag-1.8.1.tgz",
       "integrity": "sha1-Qa4u62XvpiJorr/qg6x9eSmbCIc="
     },
-    "eventemitter3": {
-      "version": "3.1.2",
-      "resolved": "https://registry.npmjs.org/eventemitter3/-/eventemitter3-3.1.2.tgz",
-      "integrity": "sha512-tvtQIeLVHjDkJYnzf2dgVMxfuSGJeM/7UCG17TT4EumTfNtF+0nebF/4zWOIkCreAbtNqhGEboB6BWrwqNaw4Q=="
-    },
     "events": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/events/-/events-3.0.0.tgz",
@@ -5336,6 +5346,11 @@
       "resolved": "https://registry.npmjs.org/forwarded/-/forwarded-0.1.2.tgz",
       "integrity": "sha1-mMI9qxF1ZXuMBXPozszZGw/xjIQ="
     },
+    "fraction.js": {
+      "version": "4.0.12",
+      "resolved": "https://registry.npmjs.org/fraction.js/-/fraction.js-4.0.12.tgz",
+      "integrity": "sha512-8Z1K0VTG4hzYY7kA/1sj4/r1/RWLBD3xwReT/RCrUCbzPszjNQCCsy3ktkU/eaEqX3MYa4pY37a52eiBlPMlhA=="
+    },
     "fragment-cache": {
       "version": "0.2.1",
       "resolved": "https://registry.npmjs.org/fragment-cache/-/fragment-cache-0.2.1.tgz",
@@ -5851,13 +5866,20 @@
       "integrity": "sha512-cZdEF7r4gfRIq7ezX9J0T+kQmJNOub71dWbgAXVHDct80TKP4MCETtZQ31xyv38UwgzkWPYF/Xc0ge55dW9Z9w=="
     },
     "http-proxy": {
-      "version": "1.17.0",
-      "resolved": "https://registry.npmjs.org/http-proxy/-/http-proxy-1.17.0.tgz",
-      "integrity": "sha512-Taqn+3nNvYRfJ3bGvKfBSRwy1v6eePlm3oc/aWVxZp57DQr5Eq3xhKJi7Z4hZpS8PC3H4qI+Yly5EmFacGuA/g==",
+      "version": "1.18.1",
+      "resolved": "https://registry.npmjs.org/http-proxy/-/http-proxy-1.18.1.tgz",
+      "integrity": "sha512-7mz/721AbnJwIVbnaSv1Cz3Am0ZLT/UBwkC92VlxhXv/k/BBQfM2fXElQNC27BVGr0uwUpplYPQM9LnaBMR5NQ==",
       "requires": {
-        "eventemitter3": "^3.0.0",
+        "eventemitter3": "^4.0.0",
         "follow-redirects": "^1.0.0",
         "requires-port": "^1.0.0"
+      },
+      "dependencies": {
+        "eventemitter3": {
+          "version": "4.0.7",
+          "resolved": "https://registry.npmjs.org/eventemitter3/-/eventemitter3-4.0.7.tgz",
+          "integrity": "sha512-8guHBZCwKnFhYdHr2ysuRWErTwhoN2X8XELRlrRwpmfeY2jjuUN4taQMsULKUVo1K4DvZl+0pgfyoysHxvmvEw=="
+        }
       }
     },
     "http-proxy-middleware": {
@@ -6420,6 +6442,11 @@
         "handlebars": "^4.1.2"
       }
     },
+    "javascript-natural-sort": {
+      "version": "0.7.1",
+      "resolved": "https://registry.npmjs.org/javascript-natural-sort/-/javascript-natural-sort-0.7.1.tgz",
+      "integrity": "sha1-+eIwPUUH9tdDVac2ZNFED7Wg71k="
+    },
     "jest": {
       "version": "24.7.1",
       "resolved": "https://registry.npmjs.org/jest/-/jest-24.7.1.tgz",
@@ -7847,6 +7874,21 @@
         "object-visit": "^1.0.0"
       }
     },
+    "mathjs": {
+      "version": "6.6.5",
+      "resolved": "https://registry.npmjs.org/mathjs/-/mathjs-6.6.5.tgz",
+      "integrity": "sha512-jvRqk7eoEHBcx/lskmy05m+8M7xDHAJcJzRJoqIsqExtlTHPDQO0Zv85g5F0rasDAXF+DLog/70hcqCJijSzPQ==",
+      "requires": {
+        "complex.js": "^2.0.11",
+        "decimal.js": "^10.2.0",
+        "escape-latex": "^1.2.0",
+        "fraction.js": "^4.0.12",
+        "javascript-natural-sort": "^0.7.1",
+        "seed-random": "^2.2.0",
+        "tiny-emitter": "^2.1.0",
+        "typed-function": "^1.1.1"
+      }
+    },
     "md5.js": {
       "version": "1.3.5",
       "resolved": "https://registry.npmjs.org/md5.js/-/md5.js-1.3.5.tgz",
@@ -9728,9 +9770,9 @@
       "integrity": "sha1-IZMqVJ9eUv/ZqCf1cOBL5iqX2lQ="
     },
     "prettier": {
-      "version": "1.18.2",
-      "resolved": "https://registry.npmjs.org/prettier/-/prettier-1.18.2.tgz",
-      "integrity": "sha512-OeHeMc0JhFE9idD4ZdtNibzY0+TPHSpSSb9h8FqtP+YnoZZ1sl8Vc9b1sasjfymH3SonAF4QcA2+mzHPhMvIiw==",
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/prettier/-/prettier-2.1.1.tgz",
+      "integrity": "sha512-9bY+5ZWCfqj3ghYBLxApy2zf6m+NJo5GzmLTpr9FsApsfjriNnS2dahWReHMi7qNPhhHl9SYHJs2cHZLgexNIw==",
       "dev": true
     },
     "pretty-bytes": {
@@ -10372,6 +10414,16 @@
         "symbol-observable": "^1.2.0"
       }
     },
+    "redux-promise-middleware": {
+      "version": "6.1.2",
+      "resolved": "https://registry.npmjs.org/redux-promise-middleware/-/redux-promise-middleware-6.1.2.tgz",
+      "integrity": "sha512-ZqZu/nnSzGgwTtNbGoGVontpk7LjTOv0kigtt3CcgXI9gpq+8WlfXTXRZD0WTD5yaohRq0q2nYmJXSTjwXs83Q=="
+    },
+    "redux-thunk": {
+      "version": "2.3.0",
+      "resolved": "https://registry.npmjs.org/redux-thunk/-/redux-thunk-2.3.0.tgz",
+      "integrity": "sha512-km6dclyFnmcvxhAcrQV2AkZmPQjzPDjgVlQtR0EQjxZPyJ0BnMf3in1ryuR8A2qU0HldVRfxYXbFSKlI3N7Slw=="
+    },
     "regenerate": {
       "version": "1.4.0",
       "resolved": "https://registry.npmjs.org/regenerate/-/regenerate-1.4.0.tgz",
@@ -10841,6 +10893,11 @@
         "ajv-keywords": "^3.1.0"
       }
     },
+    "seed-random": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/seed-random/-/seed-random-2.2.0.tgz",
+      "integrity": "sha1-KpsZ4lCoFwmSMaW5mk2vgLf77VQ="
+    },
     "select-hose": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/select-hose/-/select-hose-2.0.0.tgz",
@@ -11731,6 +11788,11 @@
       "resolved": "https://registry.npmjs.org/timsort/-/timsort-0.3.0.tgz",
       "integrity": "sha1-QFQRqOfmM5/mTbmiNN4R3DHgK9Q="
     },
+    "tiny-emitter": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/tiny-emitter/-/tiny-emitter-2.1.0.tgz",
+      "integrity": "sha512-NB6Dk1A9xgQPMoGqC5CVXn123gWyte215ONT5Pp5a0yt4nlEoO1ZWeCwpncaekPHXO60i47ihFnZPiRPjRMq4Q=="
+    },
     "tmp": {
       "version": "0.0.33",
       "resolved": "https://registry.npmjs.org/tmp/-/tmp-0.0.33.tgz",
@@ -11862,6 +11924,11 @@
         "mime-types": "~2.1.24"
       }
     },
+    "typed-function": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/typed-function/-/typed-function-1.1.1.tgz",
+      "integrity": "sha512-RbN7MaTQBZLJYzDENHPA0nUmWT0Ex80KHItprrgbTPufYhIlTePvCXZxyQK7wgn19FW5bnuaBIKcBb5mRWjB1Q=="
+    },
     "typedarray": {
       "version": "0.0.6",
       "resolved": "https://registry.npmjs.org/typedarray/-/typedarray-0.0.6.tgz",
diff --git a/yarn.lock b/yarn.lock
index 53cfa16..aa99886 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3402,7 +3402,7 @@ debug@2.6.9, debug@^2.1.2, debug@^2.2.0, debug@^2.3.3, debug@^2.6.0, debug@^2.6.
   dependencies:
     ms "2.0.0"
 
-debug@^3.2.5, debug@^3.2.6:
+debug@^3.2.5:
   version "3.2.6"
   resolved "https://registry.yarnpkg.com/debug/-/debug-3.2.6.tgz#e83d17de16d8a7efb7717edbe5fb10135eee629b"
   integrity sha512-mel+jf7nrtEl5Pn1Qx46zARXKDpBbvzezse7p7LqINmdoIk8PYP5SySaxEmYv6TZ0JyEKA1hsCId6DIhgITtWQ==
@@ -4058,10 +4058,10 @@ etag@~1.8.1:
   resolved "https://registry.yarnpkg.com/etag/-/etag-1.8.1.tgz#41ae2eeb65efa62268aebfea83ac7d79299b0887"
   integrity sha1-Qa4u62XvpiJorr/qg6x9eSmbCIc=
 
-eventemitter3@^3.0.0:
-  version "3.1.0"
-  resolved "https://registry.yarnpkg.com/eventemitter3/-/eventemitter3-3.1.0.tgz#090b4d6cdbd645ed10bf750d4b5407942d7ba163"
-  integrity sha512-ivIvhpq/Y0uSjcHDcOIccjmYjGLcP09MFGE7ysAwkAvkXfpZlC985pH2/ui64DKazbTW/4kN3yqozUxlXzI6cA==
+eventemitter3@^4.0.0:
+  version "4.0.7"
+  resolved "https://registry.yarnpkg.com/eventemitter3/-/eventemitter3-4.0.7.tgz#2de9b68f6528d5644ef5c59526a1b4a07306169f"
+  integrity sha512-8guHBZCwKnFhYdHr2ysuRWErTwhoN2X8XELRlrRwpmfeY2jjuUN4taQMsULKUVo1K4DvZl+0pgfyoysHxvmvEw==
 
 events@^3.0.0:
   version "3.0.0"
@@ -4412,11 +4412,9 @@ flush-write-stream@^1.0.0:
     readable-stream "^2.3.6"
 
 follow-redirects@^1.0.0:
-  version "1.7.0"
-  resolved "https://registry.yarnpkg.com/follow-redirects/-/follow-redirects-1.7.0.tgz#489ebc198dc0e7f64167bd23b03c4c19b5784c76"
-  integrity sha512-m/pZQy4Gj287eNy94nivy5wchN3Kp+Q5WgUPNy5lJSZ3sgkVKSYV/ZChMAQVIgx1SqfZ2zBZtPA2YlXIWxxJOQ==
-  dependencies:
-    debug "^3.2.6"
+  version "1.13.0"
+  resolved "https://registry.yarnpkg.com/follow-redirects/-/follow-redirects-1.13.0.tgz#b42e8d93a2a7eea5ed88633676d6597bc8e384db"
+  integrity sha512-aq6gF1BEKje4a9i9+5jimNFIpq4Q1WiwBToeRK5NvZBd/TRsmW8BsJfOEGkr76TbOyPVD3OVDN910EcUNtRYEA==
 
 for-in@^0.1.3:
   version "0.1.8"
@@ -4970,11 +4968,11 @@ http-proxy-middleware@^0.19.1:
     micromatch "^3.1.10"
 
 http-proxy@^1.17.0:
-  version "1.17.0"
-  resolved "https://registry.yarnpkg.com/http-proxy/-/http-proxy-1.17.0.tgz#7ad38494658f84605e2f6db4436df410f4e5be9a"
-  integrity sha512-Taqn+3nNvYRfJ3bGvKfBSRwy1v6eePlm3oc/aWVxZp57DQr5Eq3xhKJi7Z4hZpS8PC3H4qI+Yly5EmFacGuA/g==
+  version "1.18.1"
+  resolved "https://registry.yarnpkg.com/http-proxy/-/http-proxy-1.18.1.tgz#401541f0534884bbf95260334e72f88ee3976549"
+  integrity sha512-7mz/721AbnJwIVbnaSv1Cz3Am0ZLT/UBwkC92VlxhXv/k/BBQfM2fXElQNC27BVGr0uwUpplYPQM9LnaBMR5NQ==
   dependencies:
-    eventemitter3 "^3.0.0"
+    eventemitter3 "^4.0.0"
     follow-redirects "^1.0.0"
     requires-port "^1.0.0"