reorderable_grid_view 1.0.0

Reorderable Grid View

[1.0.0] - 2021-6-25

• add null-safety
• add option antiMultiDrag

[0.0.2+2] - 2021-4-14

• add GridView construct params, like physics etc.

[0.0.2+1] - 2021-02-04

fix add footer issue

[0.0.2] - 2021-02-04

fix grid gap, calculate item position issue.

[0.0.1] - TODO: Add release date.

• TODO: Describe initial release.