concept cleanup'
concept graph update
Merge branch 'masterDGTal' into MetricConcepts
new MetricSpace concepts (in concepts::) and doc
propagating changes
missing file and faster .travis
doc warning
Metric doc added
Concepts updates and DigitalMetricAdapter added
changelog
changelog number
fixing conflict
doxy fixes
Basic point functors and test
merge from master
fix typo doc
Fixing conflicts
Merge branch 'master' of github.com:DGtal-team/DGtal into FlipDomainAxisFunctor
correct flip doc
fixing the doc