Frame script are not export

[k8w]

Problem
If a MovieClip only have 1 frame, its frame script would never be exported.
(Actually it is exported to the output json file, but not to the output js file.

Reproduction

1. Make a new MovieClip
2. Only 1 frame, and add script at frame0, for example:

console.log('test');

3. Publish and run , and you would not see test in the console.

Demo project

[ericente]

fixed in 1.4.0