[libks]
- fix wrong function link.
.
[zlib][libpng]
- fix build for release.
[libks]
- support loading .png file.
[libks]
- fix wrong text format, which make debugging look strange.
[libks]
- make the ks_image_t renderable.
[libks]
- make it left-bottom corner as the original position.
[libks]
- fix bug about image rendering clipp.
[libks]
- fix bug about image rending clip.
[libks][graphics]
- do code re-organization.
.
[libks][graphics]
- enable render different image.
[libks]
- use maximum FPS.