diff --git a/yarn.lock b/yarn.lock
index 3a70d4a..43750ac 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -348,6 +348,20 @@
   dependencies:
     "@babel/types" "^7.3.0"
 
+"@types/codemirror@^0.0.76":
+  version "0.0.76"
+  resolved "https://registry.yarnpkg.com/@types/codemirror/-/codemirror-0.0.76.tgz#c52719878056a216bc05889b46a41d4eb1434423"
+  integrity sha512-k/hpUb+Ebyn9z63qM8IbsRiW0eYHZ+pi/1e2reGzBKAZJzkjWmNTXXqLLiNv5d9ekyxkajxRBr5Hu2WZq/nokw==
+  dependencies:
+    "@types/tern" "*"
+
+"@types/codemirror@^5.60.4":
+  version "5.60.5"
+  resolved "https://registry.yarnpkg.com/@types/codemirror/-/codemirror-5.60.5.tgz#5b989a3b4bbe657458cf372c92b6bfda6061a2b7"
+  integrity sha512-TiECZmm8St5YxjFUp64LK0c8WU5bxMDt9YaAek1UqUb9swrSCoJhh92fWu1p3mTEqlHjhB5sY7OFBhWroJXZVg==
+  dependencies:
+    "@types/tern" "*"
+
 "@types/d3-array@*":
   version "2.0.0"
   resolved "https://registry.npmjs.org/@types/d3-array/-/d3-array-2.0.0.tgz#a0d63a296a2d8435a9ec59393dcac746c6174a96"
@@ -569,6 +583,11 @@
     "@types/d3-voronoi" "*"
     "@types/d3-zoom" "*"
 
+"@types/estree@*":
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/@types/estree/-/estree-1.0.0.tgz#5fb2e536c1ae9bf35366eed879e827fa59ca41c2"
+  integrity sha512-WulqXMDUTYAXCjZnk6JtIHPigp55cVtDgDrO2gHRwhyJto21+1zbVCtOYB2L1F9w4qCQ0rOGWBnBe0FNTiEJIQ==
+
 "@types/estree@0.0.39":
   version "0.0.39"
   resolved "https://registry.npmjs.org/@types/estree/-/estree-0.0.39.tgz#e177e699ee1b8c22d23174caaa7422644389509f"
@@ -634,6 +653,11 @@
     "@types/tough-cookie" "*"
     parse5 "^4.0.0"
 
+"@types/marked@^4.0.7":
+  version "4.0.7"
+  resolved "https://registry.yarnpkg.com/@types/marked/-/marked-4.0.7.tgz#400a76809fd08c2bbd9e25f3be06ea38c8e0a1d3"
+  integrity sha512-eEAhnz21CwvKVW+YvRvcTuFKNU9CV1qH+opcgVK3pIMI6YZzDm6gc8o2vHjldFk6MGKt5pueSB7IOpvpx5Qekw==
+
 "@types/minimatch@*":
   version "3.0.3"
   resolved "https://registry.npmjs.org/@types/minimatch/-/minimatch-3.0.3.tgz#3dca0e3f33b200fc7d1139c0cd96c1268cadfd9d"
@@ -656,11 +680,6 @@
   dependencies:
     "@types/node" "*"
 
-"@types/simplemde@^1.11.7":
-  version "1.11.7"
-  resolved "https://registry.npmjs.org/@types/simplemde/-/simplemde-1.11.7.tgz#c8bd9f54ff46db7f311a989004eb5815acedf429"
-  integrity sha512-b3yirBar1gqb9clgJJKpx+Or3txkOOkm5sffhRKaBUfh7+1D2Aimx2RKXGS1LK9S5KyNmug3lwpGJtaID9cOnA==
-
 "@types/sortablejs@^1.3.32":
   version "1.7.2"
   resolved "https://registry.npmjs.org/@types/sortablejs/-/sortablejs-1.7.2.tgz#1e75a84ff3c60e6d44c43641f717a131b785982c"
@@ -671,6 +690,13 @@
   resolved "https://registry.npmjs.org/@types/stack-utils/-/stack-utils-1.0.1.tgz#0a851d3bd96498fa25c33ab7278ed3bd65f06c3e"
   integrity sha512-l42BggppR6zLmpfU6fq9HEa2oGPEI8yrSPL3GITjfRInppYFahObbIQOQK3UGxEnyQpltZLaPe75046NOZQikw==
 
+"@types/tern@*":
+  version "0.23.4"
+  resolved "https://registry.yarnpkg.com/@types/tern/-/tern-0.23.4.tgz#03926eb13dbeaf3ae0d390caf706b2643a0127fb"
+  integrity sha512-JAUw1iXGO1qaWwEOzxTKJZ/5JxVeON9kvGZ/osgZaJImBnyjyn0cjovPsf6FNLmyGY8Vw9DoXZCMlfMkMwHRWg==
+  dependencies:
+    "@types/estree" "*"
+
 "@types/tough-cookie@*":
   version "2.3.5"
   resolved "https://registry.npmjs.org/@types/tough-cookie/-/tough-cookie-2.3.5.tgz#9da44ed75571999b65c37b60c9b2b88db54c585d"
@@ -1158,17 +1184,17 @@ code-point-at@^1.0.0:
   resolved "https://registry.npmjs.org/code-point-at/-/code-point-at-1.1.0.tgz#0d070b4d043a5bea33a2f1a40e2edb3d9a4ccf77"
   integrity sha1-DQcLTQQ6W+ozovGkDi7bPZpMz3c=
 
-codemirror-spell-checker@*:
+codemirror-spell-checker@1.1.2:
   version "1.1.2"
-  resolved "https://registry.npmjs.org/codemirror-spell-checker/-/codemirror-spell-checker-1.1.2.tgz#1c660f9089483ccb5113b9ba9ca19c3f4993371e"
-  integrity sha1-HGYPkIlIPMtRE7m6nKGcP0mTNx4=
+  resolved "https://registry.yarnpkg.com/codemirror-spell-checker/-/codemirror-spell-checker-1.1.2.tgz#1c660f9089483ccb5113b9ba9ca19c3f4993371e"
+  integrity sha512-2Tl6n0v+GJRsC9K3MLCdLaMOmvWL0uukajNJseorZJsslaxZyZMgENocPU8R0DyoTAiKsyqiemSOZo7kjGV0LQ==
   dependencies:
     typo-js "*"
 
-codemirror@*:
-  version "5.48.4"
-  resolved "https://registry.npmjs.org/codemirror/-/codemirror-5.48.4.tgz#4210fbe92be79a88f0eea348fab3ae78da85ce47"
-  integrity sha512-pUhZXDQ6qXSpWdwlgAwHEkd4imA0kf83hINmUEzJpmG80T/XLtDDEzZo8f6PQLuRCcUQhmzqqIo3ZPTRaWByRA==
+codemirror@^5.63.1:
+  version "5.65.10"
+  resolved "https://registry.yarnpkg.com/codemirror/-/codemirror-5.65.10.tgz#4276a93b8534ce91f14b733ba9a1ac949666eac9"
+  integrity sha512-IXAG5wlhbgcTJ6rZZcmi4+sjWIbJqIGfeg3tNa3yX84Jb3T4huS5qzQAo/cUisc1l3bI47WZodpyf7cYcocDKg==
 
 collection-visit@^1.0.0:
   version "1.0.0"
@@ -1571,9 +1597,9 @@ decamelize@^1.2.0:
   integrity sha1-9lNNFRSCabIDUue+4m9QH5oZEpA=
 
 decode-uri-component@^0.2.0:
-  version "0.2.0"
-  resolved "https://registry.npmjs.org/decode-uri-component/-/decode-uri-component-0.2.0.tgz#eb3913333458775cb84cd1a1fae062106bb87545"
-  integrity sha1-6zkTMzRYd1y4TNGh+uBiEGu4dUU=
+  version "0.2.2"
+  resolved "https://registry.yarnpkg.com/decode-uri-component/-/decode-uri-component-0.2.2.tgz#e69dbe25d37941171dd540e024c444cd5188e1e9"
+  integrity sha512-FqUYQ+8o158GyGTrMFJms9qh3CqTKvAqgqsTnkLI8sKu0028orqBhxNMFkFen0zGyg6epACD32pjVk58ngIErQ==
 
 dedent@^0.7.0:
   version "0.7.0"
@@ -1687,6 +1713,17 @@ domexception@^1.0.1:
   dependencies:
     webidl-conversions "^4.0.2"
 
+easymde@^2.8.0:
+  version "2.18.0"
+  resolved "https://registry.yarnpkg.com/easymde/-/easymde-2.18.0.tgz#ff1397d07329b1a7b9187d2d0c20766fa16b3b1b"
+  integrity sha512-IxVVUxNWIoXLeqtBU4BLc+eS/ScYhT1Dcb6yF5Wchoj1iXAV+TIIDWx+NCaZhY7RcSHqDPKllbYq7nwGKILnoA==
+  dependencies:
+    "@types/codemirror" "^5.60.4"
+    "@types/marked" "^4.0.7"
+    codemirror "^5.63.1"
+    codemirror-spell-checker "1.1.2"
+    marked "^4.1.0"
+
 ecc-jsbn@~0.1.1:
   version "0.1.2"
   resolved "https://registry.npmjs.org/ecc-jsbn/-/ecc-jsbn-0.1.2.tgz#3a83a904e54353287874c564b7549386849a98c9"
@@ -3401,10 +3438,10 @@ map-visit@^1.0.0:
   dependencies:
     object-visit "^1.0.0"
 
-marked@*:
-  version "0.7.0"
-  resolved "https://registry.npmjs.org/marked/-/marked-0.7.0.tgz#b64201f051d271b1edc10a04d1ae9b74bb8e5c0e"
-  integrity sha512-c+yYdCZJQrsRjTPhUx7VKkApw9bwDkNbHUKo1ovgcfDjb2kc8rLuRbIFyXL5WOEUwzSSKo3IXpph2K6DqB/KZg==
+marked@^4.1.0:
+  version "4.2.3"
+  resolved "https://registry.yarnpkg.com/marked/-/marked-4.2.3.tgz#bd76a5eb510ff1d8421bc6c3b2f0b93488c15bea"
+  integrity sha512-slWRdJkbTZ+PjkyJnE30Uid64eHwbwa1Q25INCAYfZlK4o6ylagBy/Le9eWntqJFoFT93ikUKMv47GZ4gTwHkw==
 
 memory-fs@^0.4.0:
   version "0.4.1"
@@ -4490,15 +4527,6 @@ simple-websocket@^5.0.0:
     safe-buffer "^5.0.1"
     ws "^3.3.1"
 
-simplemde@^1.11.2:
-  version "1.11.2"
-  resolved "https://registry.npmjs.org/simplemde/-/simplemde-1.11.2.tgz#a23a35d978d2c40ef07dec008c92f070d8e080e3"
-  integrity sha1-ojo12XjSxA7wfewAjJLwcNjggOM=
-  dependencies:
-    codemirror "*"
-    codemirror-spell-checker "*"
-    marked "*"
-
 sisteransi@^1.0.3:
   version "1.0.3"
   resolved "https://registry.npmjs.org/sisteransi/-/sisteransi-1.0.3.tgz#98168d62b79e3a5e758e27ae63c4a053d748f4eb"