Initial support of CSV coverage format.

Data format is `file`, `covered lines`, `not covered lines`:
```
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Util/DeprecatedFeature/Logger.php,12,29
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Util/Getopt.php,50,46
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/TestCase.php,424,209
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Assert.php,691,165
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Util/XML.php,147,305
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Util/Type.php,76,23
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Util/Fileloader.php,17,5
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Util/Test.php,188,61
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Comparator.php,4,0
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Util/Configuration.php,407,78
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/TestSuite.php,286,122
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Extensions/PhptTestCase.php,0,106
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Exception.php,2,0
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Util/Class.php,39,102
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/TestSuite/DataProvider.php,6,0
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Runner/Version.php,18,2
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/TextUI/ResultPrinter.php,211,81
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/AssertionFailedError.php,3,0
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Comparator/Object.php,21,13
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/TestResult.php,187,98
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Runner/BaseTestRunner.php,32,13
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Util/Printer.php,27,34
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Comparator/Array.php,65,4
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/TextUI/TestRunner.php,252,284
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/TextUI/Command.php,183,237
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Util/ErrorHandler.php,19,14
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Error.php,6,0
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Constraint.php,29,2
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Constraint/TraversableContains.php,19,12
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/ExpectationFailedException.php,6,0
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Constraint/TraversableContainsOnly.php,0,23
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Constraint/IsInstanceOf.php,12,2
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Constraint/Exception.php,15,8
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Util/InvalidArgumentHelper.php,10,2
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Constraint/ArrayHasKey.php,5,2
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Constraint/Not.php,52,5
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Constraint/StringContains.php,11,4
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Constraint/IsType.php,14,27
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Comparator/SplObjectStorage.php,3,21
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Comparator/Resource.php,3,8
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Comparator/Numeric.php,21,2
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Comparator/DOMDocument.php,3,12
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Comparator/Scalar.php,35,3
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Comparator/Exception.php,3,7
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Comparator/Double.php,8,0
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/ComparatorFactory.php,32,6
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Comparator/Type.php,3,14
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Constraint/IsEqual.php,38,15
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Comparator/MockObject.php,3,3
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/ComparisonFailure.php,15,1
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Constraint/IsIdentical.php,31,1
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Constraint/FileExists.php,7,0
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Constraint/ClassHasAttribute.php,14,2
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Constraint/ObjectHasAttribute.php,2,2
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Constraint/IsNull.php,2,2
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Constraint/IsTrue.php,3,1
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Constraint/IsFalse.php,1,3
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Constraint/PCREMatch.php,9,0
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Constraint/GreaterThan.php,4,2
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Constraint/Or.php,30,7
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Constraint/LessThan.php,4,2
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Constraint/ClassHasStaticAttribute.php,9,2
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Constraint/Attribute.php,12,2
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Constraint/Composite.php,0,12
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Constraint/IsAnything.php,3,2
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Constraint/And.php,0,37
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Constraint/Xor.php,0,40
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Constraint/StringStartsWith.php,4,2
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Constraint/StringEndsWith.php,4,2
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Constraint/StringMatches.php,45,2
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Util/Diff.php,122,24
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Constraint/IsEmpty.php,9,2
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/IncompleteTestError.php,2,0
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/IncompleteTest.php,2,0
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/SkippedTest.php,2,0
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/SkippedTestError.php,2,0
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Constraint/Count.php,12,4
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Constraint/JsonMatches/ErrorMessageProvider.php,28,2
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Constraint/JsonMatches.php,18,2
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/TestFailure.php,23,7
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Constraint/Callback.php,22,1
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Constraint/ExceptionMessage.php,0,11
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Util/GlobalState.php,210,15
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Warning.php,8,2
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Extensions/TestDecorator.php,5,10
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Extensions/RepeatedTest.php,31,1
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Error/Deprecated.php,2,0
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Runner/StandardTestSuiteLoader.php,34,24
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Error/Notice.php,2,0
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/TestListener.php,2,0
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Test.php,2,0
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Runner/TestSuiteLoader.php,2,0
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/SelfDescribing.php,2,0
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Error/Warning.php,2,0
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Util/Filter.php,49,4
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Util/PHP/Default.php,4,0
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Util/PHP.php,105,40
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Constraint/ExceptionCode.php,2,9
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/SyntheticError.php,10,0
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Extensions/PhptTestCase/Logger.php,0,1
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Util/Filesystem.php,6,0
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Util/String.php,12,18
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Util/Log/JUnit.php,130,59
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Util/TestDox/NamePrettifier.php,46,5
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Util/TestDox/ResultPrinter/Text.php,12,0
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Util/TestDox/ResultPrinter.php,60,25
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Util/Log/TAP.php,28,49
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Util/TestDox/ResultPrinter/HTML.php,17,3
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Extensions/GroupTestSuite.php,0,26
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Extensions/PhptTestSuite.php,0,12
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Extensions/TicketListener.php,0,55
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/Constraint/SameSize.php,0,4
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/OutputError.php,0,2
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Framework/SkippedTestSuiteError.php,0,2
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Util/DeprecatedFeature.php,0,14
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Util/Log/JSON.php,0,79
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Util/PHP/Windows.php,0,13
/Users/alexanderilyin/github.com/badoo/phpunit/PHPUnit/Util/TestSuiteIterator.php,0,15
```