seconds_countdown_timer 0.2.3

package that provide countdown timer with customized widget.

0.2.3

• add checkpoint on lifecycle change.

0.2.2

• fix onEnd called on zero intial value.

0.1.0

• package compatibility.

0.0.9

• dart 2.16.0 minimal support.

0.0.7

• fix timer return null on first render.