disabled backface culling for textured quads
added TexturedScreenSpaceQuadNode::pixel_to_texcoords
Merge branch 'feature/new_renderer' of github.com:vrsys/guacamole into feature/new_renderer
moved address bar of gui example to the top left
CameraNode's ProjectionMode is enum class now
Merge branch 'feature/new_renderer' of github.com:vrsys/guacamole into feature/new_renderer
Use override instead of virtual.
improved error handling for corrupt files -> added warning
added windows dll export/import
UniformValue implementation changed from union to boost::variant<> for better readability and portability
windows port build system
Merge branch 'feature/new_renderer' of https://github.com/vrsys/guacamole into feature/new_renderer

Conflicts:
	include/gua/renderer/Uniform.hpp
	src/gua/renderer/Uniform.cpp
added dll-export
Merge pull request #89 from scholli/feature/new_renderer

Feature/new renderer
generalized program creation for materialshader
removed old non-generic program generation
bugfix
Merge pull request #91 from scholli/feature/new_renderer

Feature/new renderer
removed deprecated code
Merge pull request #92 from scholli/feature/new_renderer

removed deprecated code