initial sinatra file tree
initial stylesheet
now shows sudoku
/solution page
show solution button
added rspec rack test
inconsistent state
colorclass attempt
fixed bug - empty class string caused input to not post
removed debugging puts statements
made solution not use a separate page
displays blanks rather than zeros
wip new button
added quote marks round attributes to make it work
sinatra-partial gem
style changes
made puzzle a side-effect-free method of grid; tests
todo
put try_puzzle in grid, cycles if multiple solutions
warnign abotu multiple solutions