v0.3.3

[wcoots]

• replaced tiles with SVGs, mostly from wiki but the mine tile and the buttons in the game header were custom made
• game info and grid initialisation are now in Game.vue and the game status is now passed as a prop into the game, header and footer
• created a footer for the game that contains the status (playing/won/lost) and changes colour depending on the status. this will later contain the timer and the unflagged mines count
• updated some styling in the game header
• added types to props (didn't know this was possible earlier)