v0.9.30-stable

1. enhance size set.
2. enhance margin and goneMargin.

v0.9.29-stable

enhance grid again.

v0.9.28-beta3

optimize self wrapContent calculate.

v0.9.28-beta2

fix a self wrapContent bug.

v0.9.28-beta

fix self wrapContent bugs.

v0.9.28-alpha2

fix self wrapContent bugs.

v0.9.28-alpha

add self wrapContent support.

v0.9.27-stable

add e-index support.

v0.9.26-stable

enhance relative id.

v0.9.25-stable

add circle position support.