Merge pull request Kdyby#25 from dfx413/master

make doSaveDependingOnFiles nullable again

Nette 3.0 (Kdyby#22)

Nette 3.0

Fix $lifeTime condition in Cache::doSave (Kdyby#18)

typo

composer --no-suggest

lock to Nette 2.3

Travis: use kdyby/code-checker

Merge pull request Kdyby#14 from Kdyby/patch

Fix compatibility with Nette 2.4

Require newer doctrine/cache

Merge pull request Kdyby#7 from Kdyby/patch-validator

Add support for symfony/validator