add touch control into project; tag 0.0.16

get a naive slider component; bump 0.0.14

upgrade deps; use rand from std; bump 0.0.13

fix image loading; update styles; bump 0.0.12

tag 0.0.11

use a linked-list structure to simulate stacked states; bump 0.0.10

tag 0.0.9

refactor to simplify props declaration; bump 0.0.8

fix touch for arc; bump 0.0.7

random fixes for performance; bump 0.0.6