Modified doxygen documentation generation
Merge pull request #81 from pakozm/devel

Devel pull request
Added table.values, table.ivalues, table.keys and table.ikeys iterators
Updated table.unpack_on to avoid overwritten of keys, unless it was indicated with a true flag as last argument
Updated auto-encoder test
april_doc version 2.0... in development
New documentation API
Added changes to change list