new feature: smartCH function that retrieves the left hull of a DSS
ArithmeticalDSS can be constructed as a subsegment of a bounding DSL
Merge branch 'ArithmeticalDSSRandomAccessIterator' into ArithmeticalConvexHull
warning fixed
example + doc
doc warnings
doc
Adding normalization option when saving OBJ
changlog and BB reset in clear()
 [-1,1]->[-1/2,1/2]
doc
Fixes
warnings
Warning again
minor fix in Display3D addLine
Merge pull request #820 from dcoeurjo/noramlizedOBJ

Normalized obj
fix travis warning
Merge pull request #824 from kerautret/FixTravis

fix travis warning
adding details in the doc
 'Floor' => 'Truncation'