Add file loading and file saving code from Wil Baden's Toolbox series
Extend the gotchitama name variable to the size of two cells.
Store the name directly in that variable without any indirection.
save-gotchitama method for saving a gotchitama's instance variables to a file.

load-gotchitama loads the above saved instance variables back to the
'gotchibuffer' buffer. A valid gotchitama instance still needs to be
created from that buffer content.