see Description

bugfix method read() in card type detection. Reducing the use of Serial for display (method begin has an optional verbose parameter). Added format method and erase method ( both working for mifare classic cards only). Erase switch card back to mifare format (no NDEF). Overloaded tagPresent Method adding a timeout parameter for quick tag checking. write method discriminates mifare classic and ultralight.
All defaults behave as before.