except option added
changes of other pr reverted
changelog added
filter fix
Added fixture classes.
removed trash code.
Added FixtureTrait.
Corrected an error in the inline validator doc
Update validation.md
finished fixture feature.
improved doc.
Make HelpController check to make sure module controller path exists before scanning it
Merge pull request #2029 from jom/console_help_fix

Make HelpController check to make sure module controller path exists
Merge pull request #2023 from docsolver/patch-1

Corrected an error in the inline validator doc
Merge branch 'fixtures_except_option_added' of https://github.com/Ragazzo/yii2 into Ragazzo-fixtures_except_option_added

* 'fixtures_except_option_added' of https://github.com/Ragazzo/yii2:
  filter fix
  changelog added
  changes of other pr reverted
  except option added

Conflicts:
	framework/CHANGELOG.md
Added tests for Fixture feature.
refactored fixture implementation.
doc fix.
Update Migration.php

add ability to use an array in multi columns parameters
Merge pull request #2039 from dizews/patch-1

Update Migration.php