Only set empty slug when not set (with new and no slug config), so it doesn't override the current slug
Fix "Send" button label being ignored
Fix retrieving of relations by removing unneeded quote()
Merge pull request #351 from richardhinkamp/keep-current-slug-fix

Only set empty slug when not set
Merge pull request #355 from magabriel/fix-simpleforms-send

Fix "Send" button label being ignored
Merge pull request #356 from magabriel/fix-relations

Fix retrieving of relations by removing unneeded quote()
Added a simple robots.txt. Fixes #345.
Fixing bug in contenttype.yml.dist. Fixing small issue, introduced in #346.
New feature: You can now 'brand' the Bolt backend with a name, contact info, and a custom location to logon to the backend.
New Feature: Contenttypes can now specify their class.

Contenttypes can now specify the class to be used for records of that
contenttype. An extension can then define that class, overriding /
extending the default behaviour of \Bolt\Content.

For example:
```YAML
entries:
    name: Entries
    singular_name: Entry
    fields:
        title:
            type: text
            class: large
    (snip)
    class: \MyContent\Content
```

And in your extension, do:

```PHP
class Content extends \Bolt\Content
{

}
```
Re-add the propertychange and input events, keep change for supporting change in a selectbox. Change them to namespaced events. Fixes removed events in #346
Trigger just 1 event
Merge pull request #357 from richardhinkamp/slug-update-on-typing

Slug update on typing
Added phpdoc + correct application class typehint
May remove columns from base tables in Bolt, just not the defined contenttypes
Merge 2a652ef
Change $this->app->db to $this->app['db'] to match current coding style
Only MySQL supports unsigned integers
Fix check because it always returns array now
New set of icons!