partial seek support in the streams
really broken seek status

it's late and i'm tired, pick this up later
um, slightly closer?
fix some dumbass mistakes that make seek mostly work
fix the keyframe time
quickseek for safari/chrome, has some bugs
so.... mostly working but we seem to see only 1 in 4 frames while seeking

wtf?
wheeeeeeee have to interpolate granulepos

because they only have the data at the page level not the packet level
how... nice