Board rendering, basic class methods implemented
Implemented adj_pos, mapped out can_jump?
Added vector methods to Board class
Piece::slide_moves working
Piece::can_jump_to? implemented
Piece::can_jump? implemented
Preform_slide and Preform_jump implemented
 Piece::preform_moves! tested
Board::dup implemented
Piece::valid_move_seq? working
Piece::preform_moves implemented
Core testing complete
Board::won? implemented
Hop animation added