Changed the Yesno libary to Input.
Added a reboot option.
Changed file mode.
Bug fixes and first tests of Input.text.
Added up and down buttons.
Added two new methods...
1. make the cursor blink
2. position the cursor

Added a call to the begin() method to initialize the display parameters.
Improvements to the yesno function: standardized parameters.
Completed the text() function, then realized it was inadequate as it needs
to be able to handle long strings, so added the longtext() function.