Merge branch 'master' of http://github.com/DGtal-team/DGtal
Merge branch 'combinDSS-v2'
Merge branch 'master' of http://github.com/DGtal-team/DGtal
Merge branch 'master' of ssh://github.com/xprov/DGtal
Merge branch 'master' of http://github.com/DGtal-team/DGtal
cleaning IteratorTraits.h
 advance + middle functions
range size function
cleaning/improving circulator class + its unit tests
extra tests with circulators (range size and middle)
test of IteratorCirculatorTraits class
small corrections: difference type + inline
small corrections: cleaning isNotEmpty function
doc for iterators and ranges
more doc
first version of doc finished
Adding class Clone<T>.
Update doc of Clone<T>.
Add class Alias<T>.
Minor edits, add testCloneAndAliases.