Add Orchestra\Extension\Traits\DispatchableTrait

Signed-off-by: crynobone <crynobone@gmail.com>
EOL

Signed-off-by: crynobone <crynobone@gmail.com>
Add Orchestra\Extension\Factory::finder().

Signed-off-by: crynobone <crynobone@gmail.com>
Add test

Signed-off-by: crynobone <crynobone@gmail.com>
Rename variable.

Signed-off-by: crynobone <crynobone@gmail.com>
Merge branch '2.1' into 2.2
Merge branch '2.2'