Find the differences between two texts.
@param text1 Old string to be diffed.
@param text2 New string to be diffed.
@param checklines Speedup flag. If false, then don't run a
line-level diff first to identify the changed areas.
If true, then run a faster slightly less optimal diff.
@return List of Diff objects.
Find the differences between two texts. @param text1 Old string to be diffed. @param text2 New string to be diffed. @param checklines Speedup flag. If false, then don't run a line-level diff first to identify the changed areas. If true, then run a faster slightly less optimal diff. @return List of Diff objects.