0.16.1

• 72d4f93 Merge pull request #96 from gries/item_converter_breaks_mappings_fix (David de Boer)
• 87283d9 Merge pull request #101 from boekkooi/patch-1 (Markus Bachmann)
• 2acf9f3 Fixed a bug that caused a php-error "undefined offset" when adding a item-converter and later on adding multiple mappings. (crosse)
• 813cebd Added Maximum Nested test if xdebug is installed. (Warnar Boekkooi)
• a8401b3 CSVReader::current() avoid recursion (Warnar Boekkooi)