Minor
Externalized policy management to a module
Layers can specify their own merge policy
Minor changes
Override at layer level is now fully working
Support pure hashes  as layers
Improved a lot the automatic naming of layers at manager level
Testing invalid config files
Better handling of invalid files
Manager has now a default merge policy
Forgotten
Minor
Added convenience method to create layer
Added keep policy
Allows layer reload
Modified reload result no more returning an exception if not loaded before but a nil instead
Added the reload_layers method to manager
New version 0.2.0