Merge pull request #287 from leedavis81/patch-1

Update EventManager.php
Merge pull request #296 from myclabs/ProxyStaticProperties

Proxies shouldn't serialize static properties in __sleep()
Merge pull request #304 from samsonasik/fix/typo

fix typo
Merge pull request #312 from JamesGuthrie/fixErrorMessage

Improve UnexpectedValueException error message
Merge branch 'feature/hhvm-build'
Explicitly requiring a newer PHPUnit version for builds
Merge pull request #308 from dawehner/bmaster

fix the optimize regex and adapt the tests to actually test classAnnotat...
Housekeeping
Remove old phing build leftover.
Merge pull request #318 from pgodel/patch-1

Fixed link to Documentation
Merge branch 'release/v2.4.2' into 2.4

Merged hotfix commits in master till doctrine/common@434c364
Release 2.4.2
Bump version to 2.4.3