Update changes to Orchestra\Facile\Container.

Signed-off-by: crynobone <crynobone@gmail.com>
Add Orchestra\Support\Contracts\CsvableInterface and Orchestra\Support\Collection.

Signed-off-by: crynobone <crynobone@gmail.com>
Add v2.1.2 changelog.

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

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

Conflicts:
	src/Optimize/compile.php