bug fix: Board::create

Signed-off-by: sp6 <dsspookies@gmail.com>
bug fix: Kyokumen#move, Kyokumen#back

Signed-off-by: sp6 <dsspookies@gmail.com>
create: Kifu#jump

Signed-off-by: sp6 <dsspookies@gmail.com>
modify: .gitignore

Signed-off-by: sp6 <dsspookies@gmail.com>
create: Kifu class

Signed-off-by: sp6 <dsspookies@gmail.com>
create: Kifu class

Signed-off-by: sp6 <dsspookies@gmail.com>
Bug fix: Kyokumen#hit_koma

Signed-off-by: sp6 <dsspookies@gmail.com>
Create class Shikou

Signed-off-by: sp6 <dsspookies@gmail.com>