D8 Conversion of Omega 4

Ok here is a new one I just rolled up and some conversion notes after twiggify did it's thing.

Removed: variable_get('clean_url', 0)
No longer in d8.

.info = .info.yml
https://drupal.org/node/1935708

variable_get('js_gzip_compression', TRUE) 
\Drupal::config('system.performance')->get('js.gzip')

template.php
omega.theme

variable_get('admin_theme', $GLOBALS['theme'])
\Drupal::config('system.theme')->get('admin')

cache_set()/_get()
$cache = \Drupal::cache();
$cache->set()/->get()

Replace theme() with drupal_render().
I cheated on one and used _theme()

drupal_add_js() drupal_add_css()
#attached + drupal_render()

drupal_get_js() drupal_get_css()
new RenderWrapper('drupal_get_*') 
Seriously hate his abomination... I made it but stop gap to get rid of the process layer...

drupal_array_merge_deep_array()
NestedArray::mergeDeepArray

drupal_get_path_alias() 
$title = \Drupal::service('path.alias_manager')->getPathAlias($path);

attributes_array
attributes

classes_array
attributes.class

row_attributes
row.attributes
column_attributes
column.attributes
field_attributes
field.attributes
For these I just removed the views preprocess files.

$'s in *.twig.html removed.

$block = $variables['elements']['#block']->toArray();
$variables['block']->module
$variables['configuration']['module']

$variables['block']->delta
$variables['elements']['#plugin_id']

variable_get('drupal_js_version_query_string')
was removed from core.

Removed omega_initialize_attributes() and omega_cleanup_attributes()
More or less done in d8

No more process functions in d8
No more poll or overlay modules in d8

CSS
element-invisible
visually-hidden

element-focusable
focusable

current_path()
\Drupal::languageManager()->getDefaultLanguage()

GRDDL removed in d8
https://drupal.org/node/1052354

Added these for things I didn't know how to deal with.
// @todo Convert to d8.

What I would recommend as it seems a perfectionist's dream base theme (That's why I like it!). Take this, start from scratch though and in each file from a brand new theme. Then use your favourite merge tool to move over chunks at a time to save some time. That way every file and line will get an eyeball to two on them and less old crap to remove later on... 2¢

I'll look at adding some of these annoying details into Twiggify, like the $'s and *_array variables to attributes.

Oh and for shits and giggles, I've uploaded an diff:P

I maybe moved a few things over form core's templates like block.html.twig innards and some of html and page. But a good follow-up for anybody so inclined could be to compare and port more of core's templates into omega replacing what was generated.

Cheers!