Add publish-please to guide npm publishing

Author: wimpyprogrammer

.publishrc

@@ -0,0 +1,15 @@
+{
+  "validations": {
+    "vulnerableDependencies": false,
+    "uncommittedChanges": true,
+    "untrackedFiles": true,
+    "sensitiveData": true,
+    "branch": "master",
+    "gitTag": true
+  },
+  "confirm": true,
+  "publishCommand": "npm publish",
+  "publishTag": "latest",
+  "prePublishScript": "npm run publish-please-prereqs",
+  "postPublishScript": false
+}

package.json

@@ -36,6 +36,9 @@
     "lint-demo": "tsc -p ./demo/tsconfig.json; eslint . --ext .js,.ts --parser-options=project:./demo/tsconfig.json",
     "lint-tests": "tsc -p ./tsconfig.test.json; eslint . --ext .js,.ts --parser-options=project:./tsconfig.test.json",
     "precommit": "pretty-quick --staged",
+    "prepublish": "npx publish-please guard",
+    "publish-please": "npx publish-please",
+    "publish-please-prereqs": "npm run lint && npm run test && npm run build",
     "test": "jest --coverage",
     "travisci": "npm run lint && npm run test && codecov && npx snyk test"
   },