ashley-1.4.0

• API deprecation: finally removed the Family.getFor() methods. In order to retrieve a family, you can do Family.all().one().exclude().get(). Commit d6222d9.
• API change: makes family Builder package protected. Issue #137.
• Bug fix: EntityOperation and ComponentOperation are now properly reset when put back into their pools. This doesn't affect the API at all and it's an implementation detail fix. Commit 356cf40.
• Bug fix: fixes PooledEngine always returning new components. Commit eff243f.
• Bug fix: fixes GWT build. Issue #135.
• Bug fix: avoids removing a PooledEntity twice. Commit cf7a020.