Czi rendering (#10)

* add dimension selector sliders to czi view

* version doc & version bump

* cosmetic

* fix build?

* multi-dimension selection enabled in czi view

* remove the parameterized reset function of the renderer

it is not and is conceptually questionable

doc updates & some minor improvements

auto-update CZI-view when sliders are moved

set initial window size

fix windows build and msvc build

For reasons I don not comprehend, on Windows, we must include
=opencv2/core/mat.hpp= as the very last header in the =CvMatRender.hpp=.
If this is at any other position building on Windows, compilation will
break w/ all kinds of cryptic errors regarding OpenCV.

When building w/ msvc =__PRETTY_FUNCTION__= is not defined. =ILog.hpp=
now defines it. This should be revised to only be set when the
compiler is msvc. For the time being, it is considered sufficient though.

lib/rendering/RenderImageManager.cpp

@@ -48,8 +48,13 @@ void pixelarium::render::RenderImageManager::Add(resources::ResourceKey key) noe
 {
     // we don't want to add what's already there
     // or empty render images
+    if (this->render_image_map_.contains(key))
+    {
+        return;
+    }
+
     auto current_view = this->view_factory_->RenderImage(key);
-    if (this->render_image_map_.contains(key) || current_view == nullptr)
+    if (current_view == nullptr)
     {
         return;
     }