Added blur matrix
add logic to deteect which mouse button pressed
add convolution method
add mousedragged method
can blur pixels temporarily with right click
move convolution and blur method to Map class
move pixel modifying methods to map
remove mousedraggged method and use mousepressed variable in draw()
add back mousedragged method
remove img PImage variable
move updatePixels() methods
convolution modifies Map values instead of pixels