use a proper gemspec

version bump

fix PNG formatting

fix warnings and errors

fix solution rendering for mazes that wrap

restore ability to display solution

use Array#shuffle instead of Array#sort_by for randomizing lists

refactor the cli so it can be maintained more easily

use 'backtrack' instead of 'recursive' to select the recursive backtracker

prim's algorithm

do_step, not step

use ansi escape codes for more optimal animation. also add support for customizable animation delay

add initial support for pluggable algorithms

version bump

only try to parse the color if it is a string