Use ansi block characters to make smoother progressbars

[Micket]

I think it would be as simple as just replacing the if-else block and using something like

partials = (
    FULL_BLOCK,
    LEFT_SEVEN_EIGHTHS_BLOCK,
    LEFT_THREE_QUARTERS_BLOCK,
    LEFT_HALF_BLOCK,
    LEFT_FIVE_EIGHTHS_BLOCK,
    LEFT_THREE_EIGHTHS_BLOCK,
    LEFT_ONE_QUARTER_BLOCK,
    LEFT_ONE_EIGHTH_BLOCK,
    ' ',
    )

...
    width = (right(inner_area) - left(inner_area) + 1)
    for y in top(inner_area):bottom(inner_area)
        for x in left(inner_area):right(inner_area)
            symbol = clamp(round(Int, (x - r * width) * 8), 0, 8) + 1
            set(buf, x, y, crayon, partials[symbol])
        end
    end

Would also make the output more copy friendly.

[kdheepak]

Interesting idea! If you'd like to submit a PR I'd be open to reviewing :) If not no worries, I'll look into it this week. I had some other ideas for improving the progress bar as well that I think I'd like to implement.

[Micket]

The reason I didn't get around to submitting a PR, is because I couldn't get the package working at all right now (due to #3 ), so I just tried to write the code above blind (so it's untested)

[kdheepak]

Okay, thanks for the suggestion! I'll look into it.