Last tested on beta11.

• One custom entity Author. flat and related to store views
• Backend section for the entity mentioned above
• Frontend list and view for the entity mentioned above
• Backend relation (many to many) to catalog products. on the edit form there is a tab called 'Products' similar to related products. On the product edit page there is a tab called Authors.
• List on Author view page on frontend the related products paginated and with a sorting options.
• List related authors on product view page. There is a problem with the pagination due to a Magento2 bug #970
• Rss feeds for author list.
• Breadcrumbs support for list and view pages.
• Many to many relation with the categories (one category tab on entity add/edit form and one tab with the entities on the category add/edit form)
• Display related categories in the author page.
• Display related authors in the category page.

The other types of entities and features listed in the purpose will follow.
Don't put many hopes in this. Based on the comments on the magento 2 repo the grid system will be changed...A LOT.

....of this repository is to hold a sample CRUD module for Magento 2.0.
This module should contain the following:

• 4 Entities.
• 1 Flat - with a store selector. Similar to CMS pages
• 1 Flat but behaving as a tree - with a store selector. Similar to categories but non EAV
• 1 EAV - similar to products
• 1 EAV but behaving as tree - Similar to categories.
• Backend files for managing the entities mentioned above
• Frontend files for list and view each of the entities mentioned above
• RSS feeds for each entity mentioned above
• SOAP & REST API files for the entities mentioned above
• URL rewrites filed for frontend for the entities above
• Files needed for a many to many relation between the entities above and products
• Files needed for a many to many relation between the entities above and categories
• Files needed for a many to many relation between the entities above (among themselves)
• Each entity must support different attribute types:
• Text
• Textarea (with and without WYSIWYG editor)
• Date
• Yes/No
• Dropdown (with different source models)
• Multi-select (with different source models)
• File
• Image
• Decimal
• Integer
• Each entity should have fronend links to the list page in one of the menu/link areas provided by the default theme
• Each entity must have SEO attributes (meta-title, meta-description, meta-keywords)
• Would be nice to have unit tests for every class in the code - but that's low priority.
• Each entity type must have widgets for frontend (link, short view).
• Each entity must support customer comments.
• Each EAV entity must have a section for managing attributes (similar to product attributes).

After this is complete (or almost) it will become the base source for the Ultimate Module Creator 2.0 which will be a version for Magento 2.0 of the Ultimate Module Creator for Magento 1.7.

Any other ideas and pieces of code are welcomed even encouraged.

To install this module copy the code from this repo to app/code folder of your Magento 2 instance,
If you do this after installing Magento 2 you will have to edit app/etc/config.php and add this line in the $modules array at the end:

'Sample_News' => 1, 

then run from the console php setup/index.php update.