* Fixate jayson version to prevent regression (Miroslav Bajtoš)
 * Strictly depend on jayson@1.2.x (Ritchie Martori)
 * Upgrade Travis to container-based infrastructure (Miroslav Bajtoš)
 * Remove deprecation warning for res.send() (Bram Borggreve)
 * check raw by constructor (yorkie)
 * verify the accepts size <= 5000 (yorkie)