rewrite of vid as newvid
rewite vid engine as newvid
add atlas.  update newvid to use LayerDirty
newvid1.py example now works.  updated position and drawing sizes.
Add movement examples for newvid.
new constant dx sprite example
cleaned up implementation of instantiation
change load_map load_sprite
Merge branch 'vid_refactor' of github.com:yarbelk/pgu into vid_refactor
revereted vid.py back to cleaned up version from master
revert tilevid to use the original vid
increment version number