modification of provider to handle events without start or end
Merge pull request #26 from bertrandquequeville/master

modification of provider to handle events without start or end
Added recurring event management in google calendar provider
Added a Cache provider
Updated dependencies (FIX tests)

Removing doctrine/cache and adding doctrine/common@2.3
until 2.4 is stable
Added namespace handling to Cache provider
Used mocks in Doctrine Extension tests
Updating to doctrine 2.4 && doctrine/cache 1.1
Added tests for Twig CalendRExtension
Added tests
enable use of alternate period classes
include default classes in initial options array
Fixed CS (http://cs.sensiolabs.org)
Moving test fixtures to CalendR\Test\Fixtures
Added test for period Factory
Added first implementation of Period factory
Implemented factory usage in period and Calendar class
Bumped version
Used an injected factory instead a static one and an option array
allow use of alternate Factory that implements FactoryInterface.