Combined 2 condition lines
Revert "Combined 2 condition lines"

This reverts commit e07e905512f30fb925bd1a18d500e3c46ad2d2b6.
Some extra files destined for another commit slipped in (w2d1)
Condensed 2 condition lines
New project: Minesweeper

Minesweeper object takes 2 optional arguments for board size (square)
and number of mines.

A Minesweeper object will play a game with its play method, and
can be reset to a fresh (random) board with its reset method.

At any point, an option of "save filename" will save the game under
to the file named filename. Later, construct a new game with
Minesweeper.open(filename), then invoke play to resume.