add another same tag as a deleted one, then alert duplicate tag

[bennyzhao]

1.I add a tag named 'test'.
2.I delete the tag.
3.I add another tag named 'test'.
4.I see the alert

this is a bug

http://codepen.io/sniperwolf/pen/geFxq/

[sniperwolf]

Hi @bennyzhao,

Thank you for this issue 👍

I think that it is correleted to #8 bug. I'll fix this ASAP.

[sniperwolf]

Fixed in v1.3.1.