diff --git a/package-lock.json b/package-lock.json
index 587ff1c..9cc6f2f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "webcodebook",
-  "version": "1.7.0",
+  "version": "1.8.0",
   "lockfileVersion": 1,
   "requires": true,
   "dependencies": {
@@ -30,7 +30,6 @@
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       "resolved": "https://registry.npmjs.org/adler-32/-/adler-32-1.2.0.tgz",
       "integrity": "sha1-aj5r8KY5ALoVZSgIyxXGgT0aXyU=",
-      "optional": true,
       "requires": {
         "exit-on-epipe": "~1.0.1",
         "printj": "~1.1.0"
@@ -1139,7 +1138,6 @@
       "version": "1.2.0",
       "resolved": "https://registry.npmjs.org/crc-32/-/crc-32-1.2.0.tgz",
       "integrity": "sha512-1uBwHxF+Y/4yF5G48fwnKq6QsIXheor3ZLPT80yGBV1oEUwpPojlEhQbWKVw1VwcTQyMGHK1/XMmTjmlsmTTGA==",
-      "optional": true,
       "requires": {
         "exit-on-epipe": "~1.0.1",
         "printj": "~1.1.0"
@@ -1459,8 +1457,7 @@
     "exit-on-epipe": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/exit-on-epipe/-/exit-on-epipe-1.0.1.tgz",
-      "integrity": "sha512-h2z5mrROTxce56S+pnvAV890uu7ls7f1kEvVGJbw1OlFH3/mlJ5bkXu0KRyW94v37zzHPiUd55iLn3DA7TjWpw==",
-      "optional": true
+      "integrity": "sha512-h2z5mrROTxce56S+pnvAV890uu7ls7f1kEvVGJbw1OlFH3/mlJ5bkXu0KRyW94v37zzHPiUd55iLn3DA7TjWpw=="
     },
     "expand-brackets": {
       "version": "0.1.5",
@@ -2594,8 +2591,7 @@
     "printj": {
       "version": "1.1.2",
       "resolved": "http://registry.npmjs.org/printj/-/printj-1.1.2.tgz",
-      "integrity": "sha512-zA2SmoLaxZyArQTOPj5LXecR+RagfPSU5Kw1qP+jkWeNlrq+eJZyY2oS68SU1Z/7/myXM4lo9716laOFAVStCQ==",
-      "optional": true
+      "integrity": "sha512-zA2SmoLaxZyArQTOPj5LXecR+RagfPSU5Kw1qP+jkWeNlrq+eJZyY2oS68SU1Z/7/myXM4lo9716laOFAVStCQ=="
     },
     "private": {
       "version": "0.1.8",
@@ -3573,8 +3569,7 @@
     "voc": {
       "version": "1.1.0",
       "resolved": "https://registry.npmjs.org/voc/-/voc-1.1.0.tgz",
-      "integrity": "sha512-fthgd8OJLqq8vPcLjElTk6Rcl2e3v5ekcXauImaqEnQqd5yUWKg1+ZOBgS2KTWuVKcuvZMQq4TDptiT1uYddUA==",
-      "optional": true
+      "integrity": "sha512-fthgd8OJLqq8vPcLjElTk6Rcl2e3v5ekcXauImaqEnQqd5yUWKg1+ZOBgS2KTWuVKcuvZMQq4TDptiT1uYddUA=="
     },
     "webcharts": {
       "version": "1.11.1",
diff --git a/package.json b/package.json
index 08c2414..3250cc1 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "webcodebook",
-  "version": "1.7.0",
+  "version": "1.8.0",
   "description": "Interactive data set summaries",
   "keywords": [
     "data",