Start create Utility to be easy to create plugins
Create Utility.php with parseColumnData()
Create UtilityTest.php

* UtilityTest::testParseColumnDateExists

* UtilityTest::testParseColumnDataNotExists
Add UtilityTest::testParameter with data provider
Add check column data by preg_match() to return array or false
Add make array with data get from user input.

All test green!
Add empty files
Fix typo

* lin 6: Date => Data
Merge pull request #70 from toiee/feature-plugin-utility

Create plugin utility
Add interfaces.

* FileInterface
* FileRepositoryInterface
* FileStorageInterface
Reduce methods of  FileInterface
Merge pull request #71 from toiee/add-file-interfaces

Add file interfaces
Fix cols plugin using Utility::parseColumnData
Fix plugin utility parseColumnData method

Resolve parameter "3+1"
Merge pull request #73 from toiee/fix-plugin-utility

Fix plugin utility parseColumnData method
Merge branch 'master' into fix-cols-plugin
Delete a empty line
Merge pull request #72 from toiee/fix-cols-plugin

Fix cols plugin
Resolve conflicts