fixed a bug that cannot release OpenGL resources and recreate shadow map correctly
draw local axes bone with cyan
add OpenGL annotations to RenderTarget and BasicApplicatioContext#renderEffectParameterUIWidgets
drawing bone direction of PMD should be same as PMX
add shortcut of (push|pop)AnnotationGroup
add annotations of recompile/release effect
add ApplicationContext#deleteAllModelProxies to delete all models immediately for RenderTarget#releaseOpenGLResources
add VPVl2_ENABLE_DEBUG_ANNOTATIONS when debug build is enabled
add mutex based lock because ApplicationContext#deleteAllModelProxies calls from render thread while the project instance creates from the main thread
fixed a bug shadow map doesn't be enabled after toggling shadow type
use shortcut method of (push|pop)AnnotationGroup