Misc (#19)

* get image returns optional<Mat> instead of unique_ptr<Mat>

* introduce complexity

* rename image load function

* add example for a basic reader for binary image files

* fix windows build?

* add a status bar underneath the menu bar

* use status bar in custom_0 example app

* clang formats

* packing w/ pragma push

* add "Save As" functions to image views

* resize over reserve

* rm local override uri

* add simple thread pool

* rename to simple_thread_pool

* get rid of useless renderlib

* document version inc

* extract hardcoded values to in-header

* clang format patch

* clone registered image in custom_0

* document binary-file header

* minor fixes

* clang format

* rm unused render cmake

lib/imaging/PixelariumImageFactory.hpp

@@ -37,6 +37,6 @@ class PixelariumImageFactory
     using Log = utils::log::ILog;
 
    public:
-    static std::unique_ptr<IPixelariumImage> CreateImage(const std::string& uri, const Log& log);
+    static std::unique_ptr<IPixelariumImageCvMat> CreateImage(const std::string& uri, const Log& log);
 };
 }  // namespace pixelarium::imaging