diff --git a/CHANGES.md b/CHANGES.md
index 50df8c8b..d5710182 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -19,6 +19,8 @@
   setup browser-bug folder and ui issues folder
 - Testing: Create test utilities for selecting English and visiting and
   approving storage
+- npm: Add rimraf toward supporting Windows development (needed for
+  building docs and instrumenting)
 - npm: Update scripts to reflect removal of `all_tests.html`;
   remove `browser-test` script
 - npm: Update devDeps, peerDeps
diff --git a/badges/coverage-badge.svg b/badges/coverage-badge.svg
index f2f4c84a..2d3ca5dc 100644
--- a/badges/coverage-badge.svg
+++ b/badges/coverage-badge.svg
@@ -20,8 +20,8 @@
         <text x="325" y="150" fill="#010101" fill-opacity=".3" transform="scale(0.1)" textLength="530" lengthAdjust="spacing">Coverage</text>
         <text x="325" y="140" transform="scale(0.1)" textLength="530" lengthAdjust="spacing">Coverage</text>
     
-    <text x="885" y="150" fill="#010101" fill-opacity=".3" transform="scale(0.1)" textLength="430" lengthAdjust="spacing">22.02%</text>
-    <text x="885" y="140" transform="scale(0.1)" textLength="430" lengthAdjust="spacing">22.02%</text>
+    <text x="885" y="150" fill="#010101" fill-opacity=".3" transform="scale(0.1)" textLength="430" lengthAdjust="spacing">40.74%</text>
+    <text x="885" y="140" transform="scale(0.1)" textLength="430" lengthAdjust="spacing">40.74%</text>
   </g>
 
   
diff --git a/package-lock.json b/package-lock.json
index 6e6e3759..91b33d75 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4960,6 +4960,17 @@
           "dev": true,
           "requires": {
             "rimraf": "^2.6.3"
+          },
+          "dependencies": {
+            "rimraf": {
+              "version": "2.7.1",
+              "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.7.1.tgz",
+              "integrity": "sha512-uWjbaKIK3T1OSVptzX7Nl6PvQ3qAGtKEtVRjRuazjfL3Bx5eI409VZSqgND+4UNnmzLVdPj9FqFJNPqBZFve4w==",
+              "dev": true,
+              "requires": {
+                "glob": "^7.1.3"
+              }
+            }
           }
         },
         "untildify": {
@@ -6695,6 +6706,17 @@
         "flatted": "^2.0.0",
         "rimraf": "2.6.3",
         "write": "1.0.3"
+      },
+      "dependencies": {
+        "rimraf": {
+          "version": "2.6.3",
+          "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.6.3.tgz",
+          "integrity": "sha512-mwqeW5XsA2qAejG46gYdENaxXjx9onRNCfn7L0duuP4hCuTIi/QO7PDK07KJfp1d+izWPrzEJDcSqBa0OZQriA==",
+          "dev": true,
+          "requires": {
+            "glob": "^7.1.3"
+          }
+        }
       }
     },
     "flatted": {
@@ -10646,6 +10668,15 @@
           "integrity": "sha512-LRxmNwziLPT828z+4YkNzloCFC2YM4wrB99k+AV5ZbEyfGNWfG8SO1FUXLmLDBSo89NrJZ4DIWeLjy1CHGhMGA==",
           "dev": true
         },
+        "rimraf": {
+          "version": "2.7.1",
+          "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.7.1.tgz",
+          "integrity": "sha512-uWjbaKIK3T1OSVptzX7Nl6PvQ3qAGtKEtVRjRuazjfL3Bx5eI409VZSqgND+4UNnmzLVdPj9FqFJNPqBZFve4w==",
+          "dev": true,
+          "requires": {
+            "glob": "^7.1.3"
+          }
+        },
         "ws": {
           "version": "6.2.1",
           "resolved": "https://registry.npmjs.org/ws/-/ws-6.2.1.tgz",
@@ -11391,9 +11422,9 @@
       "dev": true
     },
     "rimraf": {
-      "version": "2.6.3",
-      "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.6.3.tgz",
-      "integrity": "sha512-mwqeW5XsA2qAejG46gYdENaxXjx9onRNCfn7L0duuP4hCuTIi/QO7PDK07KJfp1d+izWPrzEJDcSqBa0OZQriA==",
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-3.0.0.tgz",
+      "integrity": "sha512-NDGVxTsjqfunkds7CqsOiEnxln4Bo7Nddl3XhS4pXg5OzwkLqJ971ZVAAnB+DDLnF76N+VnDEiBHaVV8I06SUg==",
       "dev": true,
       "requires": {
         "glob": "^7.1.3"
diff --git a/package.json b/package.json
index 30cdbe28..7cb6e392 100644
--- a/package.json
+++ b/package.json
@@ -16,7 +16,7 @@
     "prepublishOnly": "npm run test-prep",
     "build-by-config": "rollup -c rollup-config.config.js",
     "open-es-allext": "open-cli http://localhost:8000/editor/svg-editor-es.html?extensions=ext-arrows.js,ext-closepath.js,ext-foreignobject.js,ext-helloworld.js,ext-mathjax.js,ext-php_savefile.js,ext-server_moinsave.js,ext-server_opensave.js,ext-webappfind.js,ext-xdomain-messaging.js",
-    "build-docs": "rm -rf docs/jsdoc/*;jsdoc --pedantic -c docs/jsdoc-config.js editor",
+    "build-docs": "rimraf docs/jsdoc/*;jsdoc --pedantic -c docs/jsdoc-config.js editor",
     "open-docs": "open-cli http://localhost:8000/docs/jsdoc/ && npm start",
     "build-html": "npx babel-node --plugins @babel/plugin-transform-modules-commonjs build-html.js",
     "compress-images": "imageoptim 'chrome-app/*.png' && imageoptim 'editor/extensions/*.png' && imageoptim 'editor/spinbtn/*.png' && imageoptim 'editor/jgraduate/images/*.{png,gif}' && imageoptim 'editor/images/*.png'",
@@ -35,7 +35,7 @@
     "instrument:replace-js": "frs-replace \"editor/svg-editor.js\" \"svg-editor.js\" -i svgedit-config-es.js -o instrumented/svgedit-config-es.js",
     "instrument:copy-excluded": "node cypress/support/copy.js",
     "copy-instrumented": "copyfiles -e \"**/*.js\" -u 1 \"editor/**/*\" instrumented && npm run instrument:replace-html && npm run instrument:replace-js && npm run instrument:copy-excluded",
-    "instrument": "rm -Rf instrumented && npx nyc instrument editor instrumented && npm run copy-instrumented && npm run coverage-badge",
+    "instrument": "rimraf instrumented && npx nyc instrument editor instrumented && npm run copy-instrumented && npm run coverage-badge",
     "coverage-badge": "coveradge badges/coverage-badge",
     "open-cov": "npm-run-all instrument --parallel --race start cypress:open",
     "open": "run-p start cypress:open",
@@ -159,6 +159,7 @@
     "regenerator-runtime": "^0.13.3",
     "remark-cli": "^7.0.1",
     "remark-lint-ordered-list-marker-value": "^1.0.4",
+    "rimraf": "^3.0.0",
     "rollup": "1.27.14",
     "rollup-plugin-babel": "^4.3.3",
     "rollup-plugin-re": "^1.0.7",