Merge pull request #130 from felipedjinn/0.2.x-dev

Add support to column comments in MySQL Adapter
Use DIRECTORY_SEPARATOR constant in ManagerTest so that the tests pass in the Windows environment.
Disable MySQL/PostgreSQL adapter tests based on the constant value specified (possibly) in phpunit.xml.
Merge pull request #140 from tomzx/features/test-use-adapter-enabled-constant

Skip tests based on phpunit constant values
Merge pull request #139 from tomzx/hotfix/tests-working-on-windows

Fix ManagerTest test on Windows