Feature
* **collage:** Add subplot generation from images ([`46847f5`](https://github.com/entelecheia/hyfi/commit/46847f5e38747cc15ffe213330ae1a45ff869de9))
Fix
* **collage:** Change output_file_format naming, add verbose parameter ([`0f516f9`](https://github.com/entelecheia/hyfi/commit/0f516f91bec26a35ecfb6fd85b065854c4404e99))
* **graphics:** Create directory for output file if not exists ([`451d838`](https://github.com/entelecheia/hyfi/commit/451d838c26377b96c87ac5d0e13225e1824ea9df))