nothing really
refactoring
correctly update _constrainMovement and zoom if out of areao
it seems to prevent some "jump" when setContentOffset:animated:YES
cleanup
fixed zoomFactor computation
new useful methods
better error loging
correctly copy headers
better that way
some fixes to prvent crash when no source set
don't update too much on new user location
refactoring
ignore one more contentSize change as it breaks path animations