Add automated release process. (#174)

Author: Robert Jackson

CHANGELOG.md

@@ -0,0 +1,65 @@
+# Release
+
+Releases are mostly automated using
+[release-it](https://github.com/release-it/release-it/) and
+[lerna-changelog](https://github.com/lerna/lerna-changelog/).
+
+
+## Preparation
+
+Since the majority of the actual release process is automated, the primary
+remaining task prior to releasing is confirming that all pull requests that
+have been merged since the last release have been labeled with the appropriate
+`lerna-changelog` labels and the titles have been updated to ensure they
+represent something that would make sense to our users. Some great information
+on why this is important can be found at
+[keepachangelog.com](https://keepachangelog.com/en/1.0.0/), but the overall
+guiding principles here is that changelogs are for humans, not machines.
+
+When reviewing merged PR's the labels to be used are:
+
+* breaking - Used when the PR is considered a breaking change.
+* enhancement - Used when the PR adds a new feature or enhancement.
+* bug - Used when the PR fixes a bug included in a previous release.
+* documentation - Used when the PR adds or updates documentation.
+* internal - Used for internal changes that still require a mention in the
+  changelog/release notes.
+
+
+## Release
+
+Once the prep work is completed, the actual release is straight forward:
+
+* First ensure that you have `release-it` installed globally, generally done by
+  using one of the following commands:
+
+```
+# using https://volta.sh
+volta install release-it
+
+# using Yarn
+yarn global add release-it
+
+# using npm
+npm install --global release-it
+```
+
+* Second, ensure that you have installed your projects dependencies:
+
+```
+# using yarn
+yarn install
+
+# using npm
+npm install
+```
+
+* And last (but not least 😁) do your release:
+
+```
+release-it
+```
+
+[release-it](https://github.com/release-it/release-it/) manages the actual
+release process. It will prompt you through the process of choosing the version
+number, tagging, pushing the tag and commits, etc.

RELEASE.md

@@ -40,9 +40,27 @@
     "eslint-config-prettier": "^6.4.0",
     "eslint-plugin-prettier": "^3.1.1",
     "jest": "^24.9.0",
-    "prettier": "^1.18.2"
+    "prettier": "^1.18.2",
+    "release-it": "^12.2.1",
+    "release-it-lerna-changelog": "^1.0.3"
   },
   "engines": {
     "node": "^8 || >=10"
+  },
+  "publishConfig": {
+    "registry": "https://registry.npmjs.org"
+  },
+  "release-it": {
+    "plugins": {
+      "release-it-lerna-changelog": {
+        "infile": "CHANGELOG.md"
+      }
+    },
+    "git": {
+      "tagName": "v${version}"
+    },
+    "github": {
+      "release": true
+    }
   }
 }