A few package upgrades. Includes github security alerts.

Zerline · Zerline · commit 3dd5b50459f5 · 2020-05-19T12:25:55.000+02:00
diff --git a/Dockerfile b/Dockerfile
@@ -1,4 +1,4 @@
-FROM sagemath/sagemath:9.0-py3
+FROM sagemath/sagemath:9.1.rc5
 USER root
 ENV HOME /root
 RUN apt-get update && apt-get -qq install -y curl \
diff --git a/js/package-lock.json b/js/package-lock.json
diff --git a/js/package.json b/js/package.json
@@ -46,13 +46,14 @@
   "devDependencies": {
     "rimraf": "^2.6.1",
     "ts-loader": "^6.1.2",
-    "typescript": "^3.5.3",
+    "typescript": "^3.7.0",
     "webpack-cli": "^3.3.6"
   },
   "dependencies": {
     "@phosphor/application": "^1.6.0",
     "@jupyter-widgets/base": "^2.0.1 || ^3",
     "@jupyter-widgets/controls": "^1.5.2",
+    "@jupyterlab/application": "^2.0.0",
     "@types/node": "^12.6.9",
     "ajv": "^6.10.2",
     "css-loader": "^3.2.0",

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-FROM sagemath/sagemath:9.0-py3`
	`1`	`+FROM sagemath/sagemath:9.1.rc5`
`2`	`2`	`USER root`
`3`	`3`	`ENV HOME /root`
`4`	`4`	`RUN apt-get update && apt-get -qq install -y curl \`