fix fps display error, from 1000 / fps to fps
modify image asyn load, double check queue size to avoid many threads competition the lock
add interface that can add imageload tasks
Merge pull request #104 from sufulow/master

fix fps display error, from 1000 / fps to fps
Merge branch 'master' of github.com:uic-evl/omegalib into canvas
Merge branch 'canvas' of github.com:uic-evl/omegalib into canvas
updated omicron