features 7.x-2.0-rc4

Changes since 7.x-2.0-rc3:

• #1429014 by roderik, joelcollinsdc: Added Filter features diff in drush by component.
• #2047701 by undertext | wizonesolutions: Added UX: Show number of unexported components next to each component type.
• #1915462 by DamienMcKenna, Les Lim: Added Default export directory should be configurable for generated features.
• #2089113 by hefox | PatchRanger: Fixed Feature itself shouldn't be listed amongst its possible dependencies.
• #927576 by ipouw, jweowu, kenorb, mpotter, hefox: Fixed Menu links not set as customized, revert when menu rebuilt.
• #1042088 by gram.steve, mpotter, hefox, barraponto | Talengix: Fixed Feature stuck in overridden state due to buggy hook detection.
• #2071859 by q0rban: Improve the performance and output of drush commands for sites with lots of features.
• #1572578 by hefox, nedjo, bojanz, Ogredude: Rethink the way features are enabled / disabled.
• #1597186 by kotnik, Ogredude: Fixed Do not cache included components in features_include_defaults().
• #2088771 by hefox: Fixed Unable to update a field/field_instance()/field_base() when equality operator things not-same arrays are the same.