Merge pull request #120 from enumag/patch-1

QueryBuilder: Improved autoJoinOrderBy
composer dependencies cleanup
Travis: require newer linter for build
updated readme
Typo in phpDoc wildmark => wildcard
Merge pull request #123 from mishak87/patch-8

Typo in phpDoc wildmark => wildcard
Hack for fucking stupid property unsetting on Connection
Added Connection::ping()
Removed unused namespace
QueryBuilder - @method addSelect added 

With this method IDE suggestion returns Kdyby\Doctrine\QueryBuilder correctly.
Merge pull request #127 from TomasVotruba/patch-2

QueryBuilder - @method addSelect added
Merge pull request #126 from TomasVotruba/patch-1

Removed unused namespace
Improved Helpers::loadFromFile() to be more memory effecient
Fix Serializable for 5.6
ClassMetadata: Switch to using doctrine/instantiator [closes #128]
Doc: fixed findBy relation filtering example

[ci skip]
forward compatibility with doctrine/dbal 2.5.0-RC
Smarter syntax for ResultSet::applyPaginator()
$id is now protected - typo
typos