chore: set up semantic-release (#7777)

- Set up semantic-release to automatically release from CI
- Remove the changelog, which is maintained automatically in GitHub releases from now on
- Add husky git hooks for validating commit messages with validate-commit-msg
- Extend contribution guide
- Adapt GitHub PR template
- Add readme badge

Closes #6550

.github/PULL_REQUEST_TEMPLATE.md

-_Thanks for wanting to fix something on Sequelize - we already love you long time! Please delete this text and fill in the template below. If unsure about something, just do as best as you're able._
+<!-- 
+Thanks for wanting to fix something on Sequelize - we already love you long time!
+Please fill in the template below.
+If unsure about something, just do as best as you're able.
 
-_If your PR only contains changes to documentation, you may skip the template below._
+If your PR only contains changes to documentation, you may skip the template below.
+-->
 
 ### Pull Request check-list
 
 _Please make sure to review and check all of these items:_
 
 - [ ] Does `npm run test` or `npm run test-DIALECT` pass with this change (including linting)?
-- [ ] Does your issue contain a link to existing issue (Closes #[issue]) or a description of the issue you are solving?
+- [ ] Does the description below contain a link to an existing issue (Closes #[issue]) or a description of the issue you are solving?
 - [ ] Have you added new tests to prevent regressions?
 - [ ] Is a documentation update included (if this change modifies existing APIs, or introduces new ones)?
-- [ ] Have you added an entry under `Future` in the changelog?
+- [ ] Did you follow the commit message conventions explained in CONTRIBUTING.md?
 
-_NOTE: these things are not required to open a PR and can be done afterwards / while the PR is open._
+<!-- NOTE: these things are not required to open a PR and can be done afterwards / while the PR is open. -->
 
 ### Description of change
 
-_Please provide a description of the change here._
+<!-- Please provide a description of the change here. -->

.travis.yml

@@ -42,6 +42,13 @@ script:
   - npm run lint
   - "if [ $COVERAGE ]; then npm run cover && bash <(curl -s https://codecov.io/bash) -f coverage/lcov.info; else npm run test; fi"
 
+after_success:
+  - npm run semantic-release
+
+branches:
+  except:
+    - /^v\d+\.\d+\.\d+$/
+
 deploy:
   provider: surge
   project: ./esdoc/

CONTRIBUTING.md

@@ -108,46 +108,25 @@ $ npm run docs
 
 The generated documentation will be placed in `docs/tmp.md`.
 
-### 5. That's all ###
+### 5. Commit ###
 
-Just commit and send your pull request. Happy hacking and thank you for contributing.
+Sequelize follows the [AngularJS Commit Message Conventions](https://docs.google.com/document/d/1QrDFcIiPjSLDn3EL15IJygNPiHORgU1_OOAqWjiDU5Y/edit#heading=h.em2hiij8p46d).
+Example:
 
-### Coding Guidelines ###
-Have a look at our [.eslintrc](https://github.com/sequelize/sequelize/blob/master/.eslintrc) file for the specifics. As part of the test process, all files will be linted, and your PR will **not** be accepted if it does not pass linting.
+    feat(pencil): add 'graphiteWidth' option
 
-#### Spaces ####
+Commit messages are used to automatically generate a changelog, so make sure to follow the convention.
+If you are unsure, you can let [commitizen](https://github.com/commitizen/cz-cli) ask you questions and commit for you (just run `node_modules/.bin/git-cz`).
+When you commit, your commit message will be validated automatically with [validate-commit-msg](https://github.com/kentcdodds/validate-commit-msg).
 
-Use spaces when defining functions.
-
-```js
-function(arg1, arg2, arg3) {
-  return 1;
-}
-```
-
-Use spaces for if statements.
-
-```js
-if (condition) {
-  // do something
-} else {
-  // something else
-}
-```
+Then push and send your pull request. Happy hacking and thank you for contributing.
 
-#### Variable declarations ####
-
-```js
-var num  = 1
-  , user = new User()
-  , date = new Date();
-```
-
-#### Semicolons ####
-Yes
+### Coding Guidelines ###
+Have a look at our [.eslintrc](https://github.com/sequelize/sequelize/blob/master/.eslintrc) file for the specifics. As part of the test process, all files will be linted, and your PR will **not** be accepted if it does not pass linting.
 
 # Publishing a release
 
+
 1. Ensure that latest build on master is green
 2. Ensure your local code is up to date (`git pull origin master`)
 3. `npm version patch|minor|major` (see [Semantic Versioning](http://semver.org))

README.md

@@ -7,6 +7,7 @@
 [![Slack Status](http://sequelize-slack.herokuapp.com/badge.svg)](http://sequelize-slack.herokuapp.com/)
 [![npm](https://img.shields.io/npm/dm/sequelize.svg?maxAge=2592000)](https://www.npmjs.com/package/sequelize)
 [![License](https://img.shields.io/npm/l/sequelize.svg?maxAge=2592000?style=plastic)](https://github.com/sequelize/sequelize/blob/master/LICENSE)
+[![semantic-release](https://img.shields.io/badge/%20%20%F0%9F%93%A6%F0%9F%9A%80-semantic--release-e10079.svg)](https://github.com/semantic-release/semantic-release)
 
 Sequelize is a promise-based Node.js ORM for Postgres, MySQL, SQLite and Microsoft SQL Server. It features solid transaction support, relations, read replication and more.
 

package.json

 {
   "name": "sequelize",
   "description": "Multi dialect ORM for Node.JS",
-  "version": "4.1.0",
+  "version": "0.0.0-development",
   "author": "Sascha Depold <sascha@depold.com>",
   "contributors": [
     {
@@ -61,11 +61,14 @@
     "chai-datetime": "^1.4.1",
     "chai-spies": "^0.7.1",
     "cheerio": "^0.22.0",
+    "commitizen": "^2.9.6",
     "continuation-local-storage": "^3.2.0",
     "cross-env": "^3.0.0",
+    "cz-conventional-changelog": "^2.0.0",
     "esdoc": "^0.5.2",
     "eslint": "^3.6.0",
     "hints": "^1.1.0",
+    "husky": "^0.13.4",
     "istanbul": "^0.4.5",
     "lcov-result-merger": "^1.2.0",
     "mocha": "^3.0.2",
@@ -75,11 +78,13 @@
     "pg-native": "^1.10.0",
     "pg-types": "^1.11.0",
     "rimraf": "^2.5.4",
+    "semantic-release": "^6.3.6",
     "sinon": "^1.17.6",
     "sinon-chai": "^2.8.0",
     "sqlite3": "^3.1.4",
     "tedious": "^1.14.0",
-    "uuid-validate": "^0.0.2"
+    "uuid-validate": "^0.0.2",
+    "validate-commit-msg": "^2.12.2"
   },
   "keywords": [
     "mysql",
@@ -129,10 +134,17 @@
     "sscce": "docker-compose run sequelize /bin/sh -c \"node sscce.js\"",
     "sscce-mysql": "cross-env DIALECT=mysql npm run sscce",
     "sscce-postgres": "cross-env DIALECT=postgres npm run sscce",
-    "sscce-sqlite": "cross-env DIALECT=sqlite npm run sscce"
+    "sscce-sqlite": "cross-env DIALECT=sqlite npm run sscce",
+    "semantic-release": "semantic-release pre && npm publish && semantic-release post",
+    "commitmsg": "validate-commit-msg"
   },
   "engines": {
     "node": ">=4.0.0"
   },
-  "license": "MIT"
+  "license": "MIT",
+  "config": {
+    "commitizen": {
+      "path": "./node_modules/cz-conventional-changelog"
+    }
+  }
 }