public / sequelize

The existing Hooks mixin explicitly defines methods for all hooks on
the Sequelize instance or a given Model. This modifies the Hooks module
to provide a single method "applyTo", which mixes in the base Hook
functionality (addHook, runHooks, etc), as well as autogenerates
declarative hooks for the object its mixing in to (Model.beforeCreate,
Sequelize.beforeDefine, etc).

… failed), closes #3179

…/adders, closes #3185

Add support for tagged SQL queries

Add canonical tag to theme template

[skip ci]

Tagged SQL queries are queries constructed via ES6 tagged template
strings. For instance, one can do:

```js
var result = sql`SELECT ${1} AS "var"`;
```

The `sql` tag can transform the template string so that it returns
something like:

```js
var result = { query: 'SELECT ? AS "var"', values: [1] };
```

This makes it ideal for writing elegant SQL by passing the tagged query,
containing the `query` and `values` properties to `sequelize.query`.

Feature/docs changelog

Improve the imprint even more

…action, is default and does not need to be set

Add imprint to the docs

As the content is still originally from me and somehow related to my
anyways, I think we’ll have to add this lovely imprint :-| Hooray!

Allow overriding `plain` in rawSelect functions

Improve documentation

… when specifying 'group'. Added documentation and integration test.

… typeError when a result was NULL.

Clearify how to use Getters & Setters