Updated copyright year (Yay, 515 file updated)
Regenerated global headers
Fixed some typo
Improved some shaders
-Blah blah blah-
Thank you all for supporting my project !
-Lynix
Former-commit-id: e4e741b318ba4f203da5ffd265bd5e516e7ffd7d
Added NzRenderer::SetClearColor(const Color&)
Added describe comment for pixel formats
Fixed NzPixelFormat conversion for RGBA4 and RGB5A1 types
Fixed NzRenderer::Clear prototype
Renamed NzLock to NzLockGuard
ResourceLoader's loaders are now tested from newest to oldest