Tweak some testcase.

Signed-off-by: crynobone <crynobone@gmail.com>
Add Orchestra\Foundation\Application::setup() and fix some testcase.

Signed-off-by: crynobone <crynobone@gmail.com>
Add notifier alias and remove redundant parameter.

Signed-off-by: crynobone <crynobone@gmail.com>
Merge branch '2.1'